diff --git a/src/Symfony/Bridge/PhpUnit/ErrorAssert.php b/src/Symfony/Bridge/PhpUnit/ErrorAssert.php
deleted file mode 100644
index 783c1944db0be..0000000000000
--- a/src/Symfony/Bridge/PhpUnit/ErrorAssert.php
+++ /dev/null
@@ -1,74 +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\Bridge\PhpUnit;
-
-/**
- * Test that your code triggers expected error messages.
- *
- * @author Christian Flothmann <christian.flothmann@xabbuh.de>
- */
-final class ErrorAssert
-{
-    /**
-     * @param string[]|string $expectedMessages Expected deprecation messages
-     * @param callable        $testCode         A callable that is expected to trigger the deprecation messages
-     */
-    public static function assertDeprecationsAreTriggered($expectedMessages, $testCode)
-    {
-        if (!is_callable($testCode)) {
-            throw new \InvalidArgumentException(sprintf('The code to be tested must be a valid callable ("%s" given).', gettype($testCode)));
-        }
-
-        self::assertErrorsAreTriggered(E_USER_DEPRECATED, $expectedMessages, $testCode);
-    }
-
-    /**
-     * @param int             $expectedType     Expected triggered error type (pass one of PHP's E_* constants)
-     * @param string[]|string $expectedMessages Expected error messages
-     * @param callable        $testCode         A callable that is expected to trigger the error messages
-     */
-    public static function assertErrorsAreTriggered($expectedType, $expectedMessages, $testCode)
-    {
-        if (!is_callable($testCode)) {
-            throw new \InvalidArgumentException(sprintf('The code to be tested must be a valid callable ("%s" given).', gettype($testCode)));
-        }
-
-        $e = null;
-        $triggeredMessages = array();
-
-        try {
-            $prevHandler = set_error_handler(function ($type, $message, $file, $line, $context) use ($expectedType, &$triggeredMessages, &$prevHandler) {
-                if ($expectedType !== $type) {
-                    return null !== $prevHandler && call_user_func($prevHandler, $type, $message, $file, $line, $context);
-                }
-                $triggeredMessages[] = $message;
-            });
-
-            call_user_func($testCode);
-        } catch (\Exception $e) {
-        } catch (\Throwable $e) {
-        }
-        restore_error_handler();
-
-        if (null !== $e) {
-            throw $e;
-        }
-
-        $expectedMessages = (array) $expectedMessages;
-
-        \PHPUnit_Framework_Assert::assertCount(count($expectedMessages), $triggeredMessages);
-
-        foreach ($triggeredMessages as $i => $message) {
-            \PHPUnit_Framework_Assert::assertContains($expectedMessages[$i], $message);
-        }
-    }
-}