How to remove Teams add-in from Outlook Windows desktop version.
In the menu bar at the top of Outlook, click "file" > "options" > "add-ins" > "Go" button. See example below:
Find the Teams entry and remove the check mark and click Ok.
From Outlook on the web (OWA):
This setting can be disabled for both Mac and PC versions through the Outlook Web App. Start by logging on to https://mail.connorgp.com
Click the gear icon and then click "View all Outlook settings"
Click "Calendar" - "Events and invitations" - remove the checkmark "Add online meeting to all meetings"
This setting will take a few hours to filter through to your Outlook client and you may need to reboot your Outlook client to pull this new setting change.
From Outlook on a MacBook.
Click "Outlook" - "Preferences" - remove the checkmark for "Add online meeting..."