delete Forum Topic
Use this method to delete a forum topic along with all its messages in a forum supergroup chat. The bot must be an administrator in the chat for this to work and must have the can_delete_messages administrator rights. Returns True on success.
Parameters
chat Id
Unique identifier for the target chat or username of the target supergroup (in the format @supergroupusername)
message Thread Id
Unique identifier for the target message thread of the forum topic