/**
  * 스케줄을 삭제한다.
  *
  * @param massmailID
  * @param scheduleID
  * @return
  */
 public int deleteMassMailSchedule(int massmailID, int scheduleID) {
   int result = 0;
   try {
     result = massmailStatisticDAO.deleteMassMailSchedule(massmailID, scheduleID);
   } catch (Exception e) {
     logger.error(e);
   }
   return result;
 }