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 commentLidija commented
Hiding a Chat is not the same as deleting it - there are tons of useless chats my users have to scroll through to get to what they want to see. I agree that not providing a Delete due to eDiscovery is a cop-out. Users would prefer to see a clean desktop.