diff --git a/lib/models/calendar/CalendarDate.class.php b/lib/models/calendar/CalendarDate.class.php
index bb15ed823f83a8be910cb029ff0260894358ca45..e9269c61bbdd93e0c11b6e88afa4ec485dd9cbe1 100644
--- a/lib/models/calendar/CalendarDate.class.php
+++ b/lib/models/calendar/CalendarDate.class.php
@@ -88,21 +88,6 @@ class CalendarDate extends SimpleORMap implements PrivacyObject
 
     }
 
-    public function delete()
-    {
-        // do not delete until one calendar is left
-        if (count($this->calendars) > 1) {
-            return false;
-        }
-        $calendars = $this->calendars;
-        $ret = parent::delete();
-        // only one calendar is left
-        if ($ret) {
-            $calendars->delete();
-        }
-        return $ret;
-    }
-
     public static function garbageCollect()
     {
         DBManager::get()->query(