Cleanup

tests/TaintTest.php

@@ -2314,14 +2314,6 @@ class TaintTest extends TestCase
                     ',
                 'error_message' => 'TaintedShell',
             ],
-            'shellExecBacktickConcatInt' => [
-                'code' => '<?php
-
-                    $input = (int) $_GET["input"];
-                    $x = `ls /path/$input`;
-                    ',
-                'error_message' => 'TaintedShell',
-            ],
             /*
             // TODO: Stubs do not support this type of inference even with $this->message = $message.
             // Most uses of getMessage() would be with caught exceptions, so this is not representative of real code.