Workspace Admins can delete Teams any time. Team Admins can delete Teams they are admin of.
Click menu → Admin to enter the Admin portal.
Click "Teams" on the left
Search for a Team by name in the search box.
Click the Bin icon to delete a Team.
Confirm Delete:
Cancel - Return to team page without removing the member
Delete - remove the member from the team.
Deleting a Team instantly removes team members' access to any content that was shared via the team.