Thank you for your votes and comments on this feature. The team is in the process of finalizing designs for deleting private chat threads. I will update as we have more progress to share.
An error occurred while saving the commentAnonymous commented
Hiding a chat isn't helpful if the others in the chat post something, it all comes back...kind of a useless feature... Please add ability to delete threads in their entirety.
Removing the Conversation Tab is being reviewed by the feature team.
For deleting chat messages, please following progress here: https://microsoftteams.uservoice.com/forums/555103/suggestions/33535006.