Changes as per comments on Github

Author: AnshuMishra17

app/code/Magento/User/Controller/Adminhtml/Auth.php

@@ -22,12 +22,12 @@ abstract class Auth extends AbstractAction
     /**
      * User model factory
      *
-     * @var \Magento\User\Model\UserFactory
+     * @var UserFactory
      */
     protected $_userFactory;
 
     /**
-     * @var \Magento\Backend\Helper\Data
+     * @var Data
      */
     protected $_backendDataHelper;
 

app/code/Magento/User/Controller/Adminhtml/Auth/Forgotpassword.php

@@ -10,7 +10,6 @@
 use Magento\Framework\App\ObjectManager;
 use Magento\Backend\App\Action\Context;
 use Magento\User\Model\UserFactory;
-use Magento\Security\Model\SecurityManager;
 use Magento\User\Model\ResourceModel\User\CollectionFactory;
 use Magento\Framework\Validator\EmailAddress;
 use Magento\Security\Model\PasswordResetRequestEvent;