remove copied WebTestCase to fix 8.1 dev

PR symfony/symfony#32207 got merged

phpstan.neon.dist

@@ -258,7 +258,6 @@ parameters:
 		- src/Symfony/Bundle/Test/Constraint/ArraySubsetLegacy.php
 		# Imported code (temporary)
 		- src/Symfony/Bundle/Test/BrowserKitAssertionsTrait.php
-		- tests/Symfony/Bundle/Test/WebTestCaseTest.php
 		- tests/Core/ProphecyTrait.php
 		- tests/Core/Behat/CoverageContext.php
 		- tests/Core/Behat/DoctrineContext.php

tests/Doctrine/EventListener/PurgeHttpCacheListenerTest.php

@@ -100,7 +100,7 @@ public function testOnFlush()
         $propertyAccessorProphecy = $this->prophesize(PropertyAccessorInterface::class);
         $propertyAccessorProphecy->isReadable(Argument::type(Dummy::class), 'relatedDummy')->willReturn(true);
         $propertyAccessorProphecy->isReadable(Argument::type(Dummy::class), 'relatedOwningDummy')->willReturn(false);
-        $propertyAccessorProphecy->getValue(Argument::type(Dummy::class), 'relatedDummy')->shouldBeCalled();
+        $propertyAccessorProphecy->getValue(Argument::type(Dummy::class), 'relatedDummy')->willReturn($toInsert2)->shouldBeCalled();
         $propertyAccessorProphecy->getValue(Argument::type(Dummy::class), 'relatedOwningDummy')->shouldNotBeCalled();
 
         $listener = new PurgeHttpCacheListener($purgerProphecy->reveal(), $iriConverterProphecy->reveal(), $resourceClassResolverProphecy->reveal(), $propertyAccessorProphecy->reveal());