Adjust class references to the new location

src/Model/User.php

@@ -39,13 +39,13 @@ use Friendica\Network\HTTPClient\Client\HttpClientAccept;
 use Friendica\Security\TwoFactor\Model\AppSpecificPassword;
 use Friendica\Network\HTTPException;
 use Friendica\Object\Image;
+use Friendica\Protocol\Delivery;
 use Friendica\Util\Crypto;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Images;
 use Friendica\Util\Network;
 use Friendica\Util\Proxy;
 use Friendica\Util\Strings;
-use Friendica\Worker\Delivery;
 use ImagickException;
 use LightOpenID;