refactor: remove unused use

Author: kenjis

tests/Authentication/Filters/ChainFilterTest.php

@@ -4,7 +4,6 @@
 
 use CodeIgniter\Config\Factories;
 use CodeIgniter\Shield\Entities\AccessToken;
-use CodeIgniter\Shield\Entities\User;
 use CodeIgniter\Shield\Filters\ChainAuth;
 use CodeIgniter\Test\DatabaseTestTrait;
 use CodeIgniter\Test\FeatureTestTrait;