[FIFO] task triggers not cleared when deleted

[qenu]

Describe Bug When removing a task, the task triggers should be removed simultaneously As if not, the task triggers would be stuck in printschedules

To Reproduce

1. make task
2. make trigger
3. remove task
4. do printschedule, trigger is stuck

Expected behavior When deleting a task the trigger should also be removed

Screenshots or Error Messages do [p]fifo printschedule to see the stuck task

Additional context should be an easy fix if you just add a function call to self.fifo_cleartriggers(ctx, taskname) at fifo/fifo.py#L491