Fix build (#425)

* Remove invalid configuration

It causes an error and does not seem to serve a purpose.

* Use cache compatibility compiler pass

It is necessary while we transition out of doctrine/cache

Author: greg0ire

Tests/DependencyInjection/DoctrineCommandsTest.php

@@ -108,7 +108,6 @@ private function getApplication(): Application
         $extension->load([
             'doctrine' => [
                 'dbal' => ['url' => 'sqlite:///:memory:'],
-                'orm' => null,
             ],
         ], $container);
 

Tests/DependencyInjection/DoctrineMigrationsExtensionTest.php

@@ -4,6 +4,7 @@
 
 namespace Doctrine\Bundle\MigrationsBundle\Tests\DependencyInjection;
 
+use Doctrine\Bundle\DoctrineBundle\DependencyInjection\Compiler\CacheCompatibilityPass;
 use Doctrine\Bundle\DoctrineBundle\DependencyInjection\DoctrineExtension;
 use Doctrine\Bundle\DoctrineBundle\Registry;
 use Doctrine\Bundle\MigrationsBundle\DependencyInjection\DoctrineMigrationsExtension;
@@ -31,6 +32,7 @@
 use Symfony\Component\DependencyInjection\Reference;
 
 use function assert;
+use function class_exists;
 use function sys_get_temp_dir;
 
 class DoctrineMigrationsExtensionTest extends TestCase
@@ -419,6 +421,9 @@ private function getContainer(array $config, ?array $dbalConfig = null, ?array $
 
         $container->getDefinition('doctrine.migrations.dependency_factory')->setPublic(true);
         $container->getDefinition('doctrine.migrations.configuration')->setPublic(true);
+        if (class_exists(CacheCompatibilityPass::class)) {
+            $container->addCompilerPass(new CacheCompatibilityPass());
+        }
 
         return $container;
     }