If a group is no longer needed, you can easily delete them. 

IMPORTANTGroups must be empty (free of users) to be deleted. Deleting groups cannot be undone! 

1. Click the Users tab in the top menu. 

2. Click the 'Groups' tab.

3. Click the ‘x’ next to the group you wish to delete. And that's it - it's gone forever.