Minor - format code

public/main/exercise/answer.class.php

@@ -815,7 +815,6 @@ class Answer
      *
      * @author Olivier Brouckaert
      *
-     * @param Question $newQuestion
      * @param null $courseInfo destination course info (result of the function api_get_course_info() )
      *
      * @throws \Doctrine\ORM\ORMException

public/main/exercise/exercise.class.php

@@ -8974,7 +8974,6 @@ class Exercise
                         );
                     }
 
-
                     $style = '';
                     if (0 === $exerciseEntity->getActive() || false === $visibility) {
                         $style = 'color:grey';
@@ -9224,7 +9223,7 @@ class Exercise
                                     'onclick' => "javascript:if(!confirm('".
                                         addslashes(api_htmlentities(get_lang('Are you sure to delete?')))." ".
                                         addslashes($exercise->getUnformattedTitle())."?"."')) return false;",
-                                    'href' => $deleteUrl
+                                    'href' => $deleteUrl,
                                 ]
                             );
                         } else {

public/main/inc/lib/internationalization.lib.php

@@ -2,7 +2,6 @@
 
 /* For licensing terms, see /license.txt */
 
-use Carbon\Carbon;
 use Chamilo\CoreBundle\DataFixtures\LanguageFixtures;
 use Chamilo\CoreBundle\Framework\Container;
 use ChamiloSession as Session;