diff --git a/src/Symfony/Bundle/FrameworkBundle/Test/TestCaseSetUpTearDownTrait.php b/src/Symfony/Bundle/FrameworkBundle/Test/TestCaseSetUpTearDownTrait.php
deleted file mode 100644
index 8fc0997913..0000000000
--- a/src/Symfony/Bundle/FrameworkBundle/Test/TestCaseSetUpTearDownTrait.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Bundle\FrameworkBundle\Test;
-
-use PHPUnit\Framework\TestCase;
-
-// Auto-adapt to PHPUnit 8 that added a `void` return-type to the setUp/tearDown methods
-
-if ((new \ReflectionMethod(TestCase::class, 'tearDown'))->hasReturnType()) {
-    /**
-     * @internal
-     */
-    trait TestCaseSetUpTearDownTrait
-    {
-        private function doSetUp(): void
-        {
-        }
-
-        private function doTearDown(): void
-        {
-        }
-
-        protected function setUp(): void
-        {
-            $this->doSetUp();
-        }
-
-        protected function tearDown(): void
-        {
-            $this->doTearDown();
-        }
-    }
-} else {
-    /**
-     * @internal
-     */
-    trait TestCaseSetUpTearDownTrait
-    {
-        private function doSetUp(): void
-        {
-        }
-
-        private function doTearDown(): void
-        {
-        }
-
-        /**
-         * @return void
-         */
-        protected function setUp()
-        {
-            $this->doSetUp();
-        }
-
-        /**
-         * @return void
-         */
-        protected function tearDown()
-        {
-            $this->doTearDown();
-        }
-    }
-}