Remove unused namespaces

Author: Martin Supiot

Module.php

@@ -15,8 +15,6 @@
 use Zend\ModuleManager\ModuleManagerInterface;
 use Zend\EventManager\EventInterface;
 use Zend\Loader\StandardAutoloader;
-use Zend\Authentication\Storage\Session as SessionStorage;
-use Zend\Authentication\AuthenticationService;
 
 use PommProject\PommModule\Service\Authentication\PommAuthenticationAdapter;