code: async def delete_reply_markup(self):
          
          return await self.bot.edit_message_reply_markup(chat_id=self.chat.id, message_id=self.message_id)
docs: Use this method to delete reply markup of messages sent by the bot or via the bot (for inline bots).
  
          :return: On success, if edited message is sent by the bot, the edited Message is returned,
              otherwise True is returned.
          :rtype: :obj:`typing.Union[types.Message, base.Boolean]`