Why do I still see ModuleQ in the Chat pane even though I've deleted my account?

There is currently no way for bots to be removed from Microsoft Teams, so the messages ModuleQ exchanged with you may remain visible in the "Chat" section. You can hid the bot by right-clicking on the bot's name in the Chat pane and selecting "Hide".

If you choose not to hide the bot, having no active conversation, it will eventually fall off of your Recent Contacts list.