<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def purge_note(note_id, **kwargs):
 """ Remove a note from the DB permenantly """

    note_i = _get_note(note_id)

    db.DBSession.delete(note_i)

    db.DBSession.flush()