Move calendar to external plugin

app/Controller/ConfigController.php

@@ -49,9 +49,6 @@ class ConfigController extends BaseController
             case 'integrations':
                 $values += array('integration_gravatar' => 0);
                 break;
-            case 'calendar':
-                $values += array('calendar_user_subtasks_time_tracking' => 0);
-                break;
         }
 
         if ($this->configModel->save($values)) {
@@ -127,18 +124,6 @@ class ConfigController extends BaseController
         )));
     }
 
-    /**
-     * Display the calendar settings page
-     *
-     * @access public
-     */
-    public function calendar()
-    {
-        $this->response->html($this->helper->layout->config('config/calendar', array(
-            'title' => t('Settings').' > '.t('Calendar settings'),
-        )));
-    }
-
     /**
      * Display the integration settings page
      *