Issue #3364958: Stages should be destroyed in the background, during cron runs

package_manager/tests/src/Kernel/StageBaseTest.php

@@ -7,7 +7,6 @@ namespace Drupal\Tests\package_manager\Kernel;
 use Drupal\Component\Datetime\Time;
 use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\Extension\ModuleUninstallValidatorException;
-use Drupal\Core\Queue\QueueFactory;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Drupal\package_manager\Event\CollectPathsToExcludeEvent;
 use Drupal\package_manager\Event\PostApplyEvent;