code: public void deleteTrigger(String triggerGroup, String triggerId) throws TriggerNotFoundException, SchedulerException {
          Trigger trigger = getTrigger(triggerId);
          if (trigger != null) {
              deleteTrigger(triggerGroup, trigger);
          } else {
              throw new TriggerNotFoundException("No trigger found for trigger id: " + triggerId);
          }
      }
docs: Deletes/Removes the {@code Trigger}. If it is a {@code ScheduledTrigger} then it is also un-scheduled from
  scheduler.
  
  @param triggerId the string that uniquely identifies the {@code Trigger} to be removed
  @throws TriggerNotFoundException if there is no {@code Trigger} that matches {@code triggerId}
  @throws SchedulerException