optimize imports

src/User/Migration/m000000_000008_add_last_login_ip.php

@@ -12,7 +12,6 @@
 namespace Da\User\Migration;
 
 use yii\db\Migration;
-use yii\db\Schema;
 
 /**
  * Class m000000_000008_add_last_login_ip

src/User/Model/AbstractAuthItem.php

@@ -14,7 +14,6 @@ namespace Da\User\Model;
 use Da\User\Traits\AuthManagerAwareTrait;
 use Da\User\Validator\RbacItemsValidator;
 use Da\User\Validator\RbacRuleExistsValidator;
-use Da\User\Validator\RbacRuleValidator;
 use Yii;
 use yii\base\Model;
 use yii\rbac\Item;

src/User/Service/PasswordExpireService.php

@@ -13,7 +13,6 @@ namespace Da\User\Service;
 
 use Da\User\Contracts\ServiceInterface;
 use Da\User\Model\User;
-use Yii;
 
 class PasswordExpireService implements ServiceInterface
 {