Fix docblocks and use declarations

lib/Alchemy/Phrasea/Controller/Admin/Publications.php

@@ -28,9 +28,6 @@ class Publications implements ControllerProviderInterface
     {
         $controllers = $app['controllers_factory'];
 
-        /**
-         * TODO NEUTRON verifier correlation avec tree
-         */
         $controllers->before(function(Request $request) use ($app) {
             $app['firewall']->requireAccessToModule('admin')
                 ->requireRight('bas_chupub');

lib/Alchemy/Phrasea/Controller/Admin/Root.php

@@ -14,7 +14,6 @@ namespace Alchemy\Phrasea\Controller\Admin;
 use Silex\Application;
 use Silex\ControllerProviderInterface;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
 
 /**
  *