Remove instanceof test

tests/PsalmInternalAnnotationTest.php

@@ -433,27 +433,6 @@ class PsalmInternalAnnotationTest extends TestCase
                     }',
                 'error_message' => 'InternalClass',
             ],
-            'internalClassWithInstanceOf' => [
-                '<?php
-                    namespace A\B {
-                        interface Bar {};
-
-                        /**
-                         * @internal
-                         * @psalm-internal A\B
-                         */
-                        class Foo { }
-                    }
-
-                    namespace A\C {
-                        class Bat {
-                            public function batBat(\A\B\Bar $bar) : void {
-                                $bar instanceOf \A\B\Foo;
-                            }
-                        }
-                    }',
-                'error_message' => 'A\B\Foo is internal to A\B',
-            ],
             'internalClassWithExtends' => [
                 '<?php
                     namespace A\B {