Bug: 14625 Fix regression in deleting resource calendars.

Partially reverts 3e095a9. Not sure why this was added, as it
isn't necessary to fix displaying the FB info, as the commit suggested.

kronolith/lib/Resource/Single.php

@@ -26,7 +26,7 @@ public function get($property)
         $property = str_replace('resource_', '', $property);
 
         if ($property == 'calendar') {
-            return 'internal_' . $this->_share->getName();
+            return $this->_share->getName();
         }
 
         return parent::get($property);