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.
An error occurred while saving the commentMandi commented
It's very difficult to use with so many old chats cluttering it. I understand the idea of offering some kind of retention, but people should have the option to choose which conversations to retain and which to delete. I don't need to scroll through hundreds of old messages and useless notifications about people leaving meetings. This definitely eats into productivity when the idea of chat vs email is to make something faster.