OptionalselectiveUse this flag if you want to remove the keyboard for specific users only. Targets: 1) users that are
in the text of the Message object; 2) if the bot's message is a reply (has reply_to_message_id), sender of the original message.
Example: A user votes in a poll, bot returns confirmation message in reply to the vote and removes the keyboard for that user, while still showing the keyboard with poll options to users who haven't voted yet
Readonlytype
Hide previously sent bot keyboard