Merge branch '2.x' into dropzone-multiple-uploads

Author: Carlos Hernández

src/LiveComponent/tests/Fixtures/Kernel.php

@@ -13,7 +13,6 @@
 
 use Composer\InstalledVersions;
 use Doctrine\Bundle\DoctrineBundle\DoctrineBundle;
-use Doctrine\ORM\Mapping\AssociationMapping;
 use Psr\Log\NullLogger;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;