diff --git a/config.xsd b/config.xsd
index 9f8676ce8..9511be473 100644
--- a/config.xsd
+++ b/config.xsd
@@ -16,14 +16,6 @@
             <xs:element name="mockClasses" type="MockClassesType" minOccurs="0" maxOccurs="1" />
             <xs:element name="stubs" type="StubsType" minOccurs="0" maxOccurs="1" />
             <xs:element name="plugins" type="PluginsType" minOccurs="0" maxOccurs="1" />
-            <xs:element name="exitFunctions" type="ExitFunctionsType" minOccurs="0" maxOccurs="1">
-                <xs:annotation>
-                    <!-- note: for PHPStorm to mark the attribute as deprecated the doc entry has to be *single line* and start with the word `deprecated` -->
-                    <xs:documentation xml:lang="en">
-                        Deprecated. Replaced by documenting never as a return type. It is going to be removed in Psalm 5.
-                    </xs:documentation>
-                </xs:annotation>
-            </xs:element>
             <xs:element name="forbiddenFunctions" type="ExitFunctionsType" minOccurs="0" maxOccurs="1" />
             <xs:element name="issueHandlers" type="IssueHandlersType" minOccurs="0" maxOccurs="1" />
             <xs:element name="ignoreExceptions" type="ExceptionsType" minOccurs="0" maxOccurs="1" />
diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index 958430211..d72bd6ee9 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -502,13 +502,6 @@ class Config
     /** @var ClassLoader|null */
     private $composer_class_loader;
 
-    /**
-     * Custom functions that always exit
-     *
-     * @var array<lowercase-string, bool>
-     */
-    public $exit_functions = [];
-
     /**
      * @var string
      */
@@ -1114,13 +1107,6 @@ class Config
             }
         }
 
-        if (isset($config_xml->exitFunctions) && isset($config_xml->exitFunctions->function)) {
-            /** @var SimpleXMLElement $exit_function */
-            foreach ($config_xml->exitFunctions->function as $exit_function) {
-                $config->exit_functions[strtolower((string) $exit_function['name'])] = true;
-            }
-        }
-
         if (isset($config_xml->stubs) && isset($config_xml->stubs->file)) {
             /** @var SimpleXMLElement $stub_file */
             foreach ($config_xml->stubs->file as $stub_file) {
diff --git a/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeAnalyzer.php b/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeAnalyzer.php
index 2566009bc..bc8d2e08d 100644
--- a/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeAnalyzer.php
@@ -156,7 +156,6 @@ class ReturnTypeAnalyzer
             && ScopeAnalyzer::getControlActions(
                 $function_stmts,
                 $type_provider,
-                $codebase->config->exit_functions,
                 []
             ) !== [ScopeAnalyzer::ACTION_END]
             && !$inferred_yield_types
@@ -177,7 +176,6 @@ class ReturnTypeAnalyzer
         $control_actions = ScopeAnalyzer::getControlActions(
             $function_stmts,
             $type_provider,
-            $codebase->config->exit_functions,
             [],
             false
         );
diff --git a/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeCollector.php b/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeCollector.php
index f0ab1bc84..a3fc6cb80 100644
--- a/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeCollector.php
+++ b/src/Psalm/Internal/Analyzer/FunctionLike/ReturnTypeCollector.php
@@ -31,8 +31,6 @@ class ReturnTypeCollector
      * @return list<Union>               a list of return types
      *
      * @psalm-suppress ComplexMethod to be refactored
-     *
-     * TODO: This would probably benefit from using the list of exit_functions
      */
     public static function getReturnTypes(
         Codebase $codebase,
diff --git a/src/Psalm/Internal/Analyzer/FunctionLikeAnalyzer.php b/src/Psalm/Internal/Analyzer/FunctionLikeAnalyzer.php
index 99a11cbb3..3891dfe37 100644
--- a/src/Psalm/Internal/Analyzer/FunctionLikeAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/FunctionLikeAnalyzer.php
@@ -533,7 +533,6 @@ abstract class FunctionLikeAnalyzer extends SourceAnalyzer
         $final_actions = ScopeAnalyzer::getControlActions(
             $this->function->getStmts() ?: [],
             null,
-            $codebase->config->exit_functions,
             []
         );
 
diff --git a/src/Psalm/Internal/Analyzer/ScopeAnalyzer.php b/src/Psalm/Internal/Analyzer/ScopeAnalyzer.php
index d15b91bbf..9fa0567f7 100644
--- a/src/Psalm/Internal/Analyzer/ScopeAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/ScopeAnalyzer.php
@@ -14,7 +14,6 @@ use function array_unique;
 use function array_values;
 use function count;
 use function in_array;
-use function strtolower;
 
 /**
  * @internal
@@ -67,7 +66,6 @@ class ScopeAnalyzer
 
     /**
      * @param array<PhpParser\Node> $stmts
-     * @param array<lowercase-string, bool> $exit_functions
      * @param list<'loop'|'switch'> $break_types
      * @param bool $return_is_exit Exit and Throw statements are treated differently from return if this is false
      *
@@ -78,7 +76,6 @@ class ScopeAnalyzer
     public static function getControlActions(
         array $stmts,
         ?NodeDataProvider $nodes,
-        array $exit_functions,
         array $break_types,
         bool $return_is_exit = true
     ): array {
@@ -109,32 +106,6 @@ class ScopeAnalyzer
                     return array_values(array_unique(array_merge($control_actions, [self::ACTION_END])));
                 }
 
-                if ($exit_functions) {
-                    if ($stmt->expr instanceof PhpParser\Node\Expr\FuncCall
-                        || $stmt->expr instanceof PhpParser\Node\Expr\StaticCall
-                    ) {
-                        if ($stmt->expr instanceof PhpParser\Node\Expr\FuncCall) {
-                            /** @var string|null */
-                            $resolved_name = $stmt->expr->name->getAttribute('resolvedName');
-
-                            if ($resolved_name && isset($exit_functions[strtolower($resolved_name)])) {
-                                return array_values(array_unique(array_merge($control_actions, [self::ACTION_END])));
-                            }
-                        } elseif ($stmt->expr->class instanceof PhpParser\Node\Name
-                            && $stmt->expr->name instanceof PhpParser\Node\Identifier
-                        ) {
-                            /** @var string|null */
-                            $resolved_class_name = $stmt->expr->class->getAttribute('resolvedName');
-
-                            if ($resolved_class_name
-                                && isset($exit_functions[strtolower($resolved_class_name . '::' . $stmt->expr->name)])
-                            ) {
-                                return array_values(array_unique(array_merge($control_actions, [self::ACTION_END])));
-                            }
-                        }
-                    }
-                }
-
                 continue;
             }
 
@@ -174,7 +145,6 @@ class ScopeAnalyzer
                 $if_statement_actions = self::getControlActions(
                     $stmt->stmts,
                     $nodes,
-                    $exit_functions,
                     $break_types,
                     $return_is_exit
                 );
@@ -190,7 +160,6 @@ class ScopeAnalyzer
                     ? self::getControlActions(
                         $stmt->else->stmts,
                         $nodes,
-                        $exit_functions,
                         $break_types,
                         $return_is_exit
                     ) : [];
@@ -211,7 +180,6 @@ class ScopeAnalyzer
                         $elseif_control_actions = self::getControlActions(
                             $elseif->stmts,
                             $nodes,
-                            $exit_functions,
                             $break_types,
                             $return_is_exit
                         );
@@ -268,7 +236,6 @@ class ScopeAnalyzer
                     $case_actions = self::getControlActions(
                         $case->stmts,
                         $nodes,
-                        $exit_functions,
                         array_merge($break_types, ['switch']),
                         $return_is_exit
                     );
@@ -334,7 +301,6 @@ class ScopeAnalyzer
                 $loop_actions = self::getControlActions(
                     $stmt->stmts,
                     $nodes,
-                    $exit_functions,
                     array_merge($break_types, ['loop']),
                     $return_is_exit
                 );
@@ -393,7 +359,6 @@ class ScopeAnalyzer
                 $try_statement_actions = self::getControlActions(
                     $stmt->stmts,
                     $nodes,
-                    $exit_functions,
                     $break_types,
                     $return_is_exit
                 );
@@ -414,7 +379,6 @@ class ScopeAnalyzer
                         $catch_actions = self::getControlActions(
                             $catch->stmts,
                             $nodes,
-                            $exit_functions,
                             $break_types,
                             $return_is_exit
                         );
@@ -453,7 +417,6 @@ class ScopeAnalyzer
                     $finally_statement_actions = self::getControlActions(
                         $stmt->finally->stmts,
                         $nodes,
-                        $exit_functions,
                         $break_types,
                         $return_is_exit
                     );
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseAnalyzer.php
index f2071b329..a9789d9d9 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseAnalyzer.php
@@ -154,7 +154,6 @@ class ElseAnalyzer
             ? ScopeAnalyzer::getControlActions(
                 $else->stmts,
                 $statements_analyzer->node_data,
-                $codebase->config->exit_functions,
                 []
             )
             : [ScopeAnalyzer::ACTION_NONE];
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseIfAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseIfAnalyzer.php
index 105bf2062..4a9476ce5 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseIfAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/ElseIfAnalyzer.php
@@ -312,7 +312,6 @@ class ElseIfAnalyzer
         $final_actions = ScopeAnalyzer::getControlActions(
             $elseif->stmts,
             $statements_analyzer->node_data,
-            $codebase->config->exit_functions,
             []
         );
         // has a return/throw at end
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/IfAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/IfAnalyzer.php
index 005a2722d..f0bd64bce 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/IfAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/IfElse/IfAnalyzer.php
@@ -75,7 +75,6 @@ class IfAnalyzer
         $final_actions = ScopeAnalyzer::getControlActions(
             $stmt->stmts,
             $statements_analyzer->node_data,
-            $codebase->config->exit_functions,
             []
         );
 
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/IfElseAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/IfElseAnalyzer.php
index 1f9dcc35d..7418e43ce 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/IfElseAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/IfElseAnalyzer.php
@@ -85,7 +85,6 @@ class IfElseAnalyzer
             $final_actions = ScopeAnalyzer::getControlActions(
                 $stmt->stmts,
                 null,
-                $codebase->config->exit_functions,
                 []
             );
 
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/LoopAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/LoopAnalyzer.php
index 1cfd4023e..a5ed09611 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/LoopAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/LoopAnalyzer.php
@@ -4,7 +4,6 @@ namespace Psalm\Internal\Analyzer\Statements\Block;
 
 use PhpParser;
 use Psalm\CodeLocation;
-use Psalm\Config;
 use Psalm\Context;
 use Psalm\Exception\ComplicatedExpressionException;
 use Psalm\Internal\Algebra;
@@ -96,7 +95,6 @@ class LoopAnalyzer
         $final_actions = ScopeAnalyzer::getControlActions(
             $stmts,
             $statements_analyzer->node_data,
-            Config::getInstance()->exit_functions,
             []
         );
 
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/SwitchAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/SwitchAnalyzer.php
index fd492eba7..c098dc4aa 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/SwitchAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/SwitchAnalyzer.php
@@ -3,7 +3,6 @@
 namespace Psalm\Internal\Analyzer\Statements\Block;
 
 use PhpParser;
-use Psalm\Config;
 use Psalm\Context;
 use Psalm\Internal\Algebra;
 use Psalm\Internal\Analyzer\ScopeAnalyzer;
@@ -73,8 +72,6 @@ class SwitchAnalyzer
 
         $case_action_map = [];
 
-        $config = Config::getInstance();
-
         // create a map of case statement -> ultimate exit type
         for ($i = count($stmt->cases) - 1; $i >= 0; --$i) {
             $case = $stmt->cases[$i];
@@ -82,7 +79,6 @@ class SwitchAnalyzer
             $case_actions = $case_action_map[$i] = ScopeAnalyzer::getControlActions(
                 $case->stmts,
                 $statements_analyzer->node_data,
-                $config->exit_functions,
                 ['switch']
             );
 
diff --git a/src/Psalm/Internal/Analyzer/Statements/Block/TryAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Block/TryAnalyzer.php
index 8ecffb85d..9f2f8428f 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Block/TryAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Block/TryAnalyzer.php
@@ -52,7 +52,6 @@ class TryAnalyzer
             $catch_actions[$i] = ScopeAnalyzer::getControlActions(
                 $catch->stmts,
                 $statements_analyzer->node_data,
-                $codebase->config->exit_functions,
                 []
             );
             $all_catches_leave = $all_catches_leave && !in_array(ScopeAnalyzer::ACTION_NONE, $catch_actions[$i], true);
@@ -105,7 +104,6 @@ class TryAnalyzer
         $try_block_control_actions = ScopeAnalyzer::getControlActions(
             $stmt->stmts,
             $statements_analyzer->node_data,
-            $codebase->config->exit_functions,
             []
         );
 
@@ -359,7 +357,6 @@ class TryAnalyzer
             $catch_actions[$i] = ScopeAnalyzer::getControlActions(
                 $catch->stmts,
                 $statements_analyzer->node_data,
-                $codebase->config->exit_functions,
                 []
             );
 
diff --git a/src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeNodeScanner.php b/src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeNodeScanner.php
index de938d517..137562221 100644
--- a/src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeNodeScanner.php
+++ b/src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeNodeScanner.php
@@ -300,7 +300,6 @@ class FunctionLikeNodeScanner
                         $final_actions = ScopeAnalyzer::getControlActions(
                             $function_stmt->stmts,
                             null,
-                            $this->config->exit_functions,
                             [],
                             false
                         );
diff --git a/tests/Config/ConfigTest.php b/tests/Config/ConfigTest.php
index ed55e000f..ab00b7277 100644
--- a/tests/Config/ConfigTest.php
+++ b/tests/Config/ConfigTest.php
@@ -869,73 +869,6 @@ class ConfigTest extends TestCase
         $this->analyzeFile($file_path, new Context());
     }
 
-    public function testExitFunctions(): void
-    {
-        $this->project_analyzer = $this->getProjectAnalyzerWithConfig(
-            TestConfig::loadFromXML(
-                dirname(__DIR__, 2),
-                '<?xml version="1.0"?>
-                <psalm>
-                    <exitFunctions>
-                        <function name="leave" />
-                        <function name="Foo\namespacedLeave" />
-                        <function name="Foo\Bar::staticLeave" />
-                    </exitFunctions>
-                </psalm>'
-            )
-        );
-
-        $file_path = getcwd() . '/src/somefile.php';
-
-        $this->addFile(
-            $file_path,
-            '<?php
-                namespace {
-                    function leave() : void {
-                        exit();
-                    }
-
-                    function mightLeave() : string {
-                        if (rand(0, 1)) {
-                            leave();
-                        } else {
-                            return "here";
-                        }
-                    }
-
-                    function mightLeaveWithNamespacedFunction() : string {
-                        if (rand(0, 1)) {
-                            \Foo\namespacedLeave();
-                        } else {
-                            return "here";
-                        }
-                    }
-
-                    function mightLeaveWithStaticMethod() : string {
-                        if (rand(0, 1)) {
-                            Foo\Bar::staticLeave();
-                        } else {
-                            return "here";
-                        }
-                    }
-                }
-
-                namespace Foo {
-                    function namespacedLeave() : void {
-                        exit();
-                    }
-
-                    class Bar {
-                        public static function staticLeave() : void {
-                            exit();
-                        }
-                    }
-                }'
-        );
-
-        $this->analyzeFile($file_path, new Context());
-    }
-
     public function testValidThrowInvalidCatch(): void
     {
         $this->expectExceptionMessage('InvalidCatch');