removed superfluous use statement

src/Symfony/Bundle/DoctrineBundle/DoctrineBundle.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Bundle\DoctrineBundle;
 
-use Symfony\Bundle\DoctrineBundle\DependencyInjection\Compiler\CreateProxyDirectoryPass;
 use Symfony\Component\DependencyInjection\Compiler\PassConfig;
 use Symfony\Bundle\DoctrineBundle\DependencyInjection\Compiler\RegisterEventListenersAndSubscribersPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;