code: def deletePlan(self, plan):
          
          data = {"event_reminder_id": plan.uid, "delete": "true", "acontext": ACONTEXT}
          j = self._post(self.req_url.PLAN_CHANGE, data, fix_request=True, as_json=True)
docs: Deletes a plan
  
          :param plan: Plan to delete
          :raises: FBchatException if request failed