fenzo-triggers/src/main/java/com/netflix/fenzo/triggers/TriggerOperator.java
public void deleteTrigger(String triggerGroup, Trigger trigger) throws SchedulerException {
        triggerDao.deleteTrigger(triggerGroup, trigger);
        if (trigger instanceof ScheduledTrigger) {
            unscheduleTrigger((ScheduledTrigger) trigger);
        }
    }
public void deleteTrigger(String triggerGroup, Trigger trigger) throws SchedulerException {
        triggerDao.deleteTrigger(triggerGroup, trigger);
        if (trigger instanceof ScheduledTrigger) {
            unscheduleTrigger((ScheduledTrigger) trigger);
        }
    }
Deletes/Removes the {@code Trigger}. If it is a {@code ScheduledTrigger} then it is also un-scheduled from
scheduler.
@warn exception SchedulerException description missing

@param trigger the {@code Trigger} to be removed