Update user service to be more separated

app/Contracts/Repository/UserRepositoryInterface.php

@@ -35,16 +35,6 @@ interface UserRepositoryInterface extends RepositoryInterface, SearchableInterfa
      */
     public function getAllUsersWithCounts();
 
-    /**
-     * Delete a user if they have no servers attached to their account.
-     *
-     * @param  int $id
-     * @return bool
-     *
-     * @throws \Pterodactyl\Exceptions\DisplayException
-     */
-    public function deleteIfNoServers($id);
-
     /**
      * Return all matching models for a user in a format that can be used for dropdowns.
      *