code: def deleteThreads(self, thread_ids):
          
          thread_ids = require_list(thread_ids)
  
          data_unpin = dict()
          data_delete = dict()
          for i, thread_id in enumerate(thread_ids):
              data_unpin["ids[{}]".format(thread_id)] = "false"
              data_delete["ids[{}]".format(i)] = thread_id
          r_unpin = self._post(self.req_url.PINNED_STATUS, data_unpin)
          r_delete = self._post(self.req_url.DELETE_THREAD, data_delete)
          return r_unpin.ok and r_delete.ok
docs: Deletes threads
  
          :param thread_ids: Thread IDs to delete. See :ref:`intro_threads`
          :return: Whether the request was successful
          :raises: FBchatException if request failed