diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php
deleted file mode 100644
index a4d7350716..0000000000
--- a/src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTest.php
+++ /dev/null
@@ -1,76 +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\Twig\Tests\Extension;
-
-use PHPUnit\Framework\TestCase;
-use Symfony\Bridge\Twig\Extension\FormExtension;
-use Symfony\Bridge\Twig\Form\TwigRendererInterface;
-use Symfony\Component\DependencyInjection\ContainerInterface;
-use Symfony\Component\Form\FormRendererInterface;
-use Twig\Environment;
-
-/**
- * @group legacy
- */
-class FormExtensionTest extends TestCase
-{
-    /**
-     * @dataProvider rendererDataProvider
-     */
-    public function testInitRuntimeAndAccessRenderer($rendererConstructor, $expectedAccessedRenderer)
-    {
-        $extension = new FormExtension($rendererConstructor);
-        $extension->initRuntime($this->getMockBuilder(Environment::class)->disableOriginalConstructor()->getMock());
-        $this->assertSame($expectedAccessedRenderer, $extension->renderer);
-    }
-
-    /**
-     * @dataProvider rendererDataProvider
-     */
-    public function testAccessRendererAndInitRuntime($rendererConstructor, $expectedAccessedRenderer)
-    {
-        $extension = new FormExtension($rendererConstructor);
-        $this->assertSame($expectedAccessedRenderer, $extension->renderer);
-        $extension->initRuntime($this->getMockBuilder(Environment::class)->disableOriginalConstructor()->getMock());
-    }
-
-    public function rendererDataProvider()
-    {
-        $twigRenderer = $this->getMockBuilder(TwigRendererInterface::class)->getMock();
-        $twigRenderer->expects($this->once())
-            ->method('setEnvironment');
-
-        yield array($twigRenderer, $twigRenderer);
-
-        $twigRenderer = $this->getMockBuilder(TwigRendererInterface::class)->getMock();
-        $twigRenderer->expects($this->once())
-            ->method('setEnvironment');
-
-        $container = $this->getMockBuilder(ContainerInterface::class)->getMock();
-        $container->expects($this->once())
-            ->method('get')
-            ->with('service_id')
-            ->willReturn($twigRenderer);
-
-        yield array(array($container, 'service_id'), $twigRenderer);
-
-        $formRenderer = $this->getMockBuilder(FormRendererInterface::class)->getMock();
-
-        $container = $this->getMockBuilder(ContainerInterface::class)->getMock();
-        $container->expects($this->once())
-            ->method('get')
-            ->with('service_id')
-            ->willReturn($formRenderer);
-
-        yield array(array($container, 'service_id'), $formRenderer);
-    }
-}