fixup! Add setup check that links to the migration documentation

Author: rullzer

apps/encryption/lib/Command/ScanLegacyFormat.php

@@ -29,12 +29,10 @@
 use OCA\Encryption\Util;
 use OCP\IConfig;
 use OCP\IUserManager;
-use OCP\Lock\LockedException;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Helper\QuestionHelper;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
-use Symfony\Component\Console\Question\ConfirmationQuestion;
 
 class ScanLegacyFormat extends Command {