Deleting Transitions Mecanim

I know this is a stupid question but how can I delete transitions in Unity Mecanim. When I right click the transitions there is not a delete and there is no remove component in inspector that I see. I am on a Mac if that matters.

I had the same problem, not sure if it is a bug in the mac, anyway if you select the transition in the animator window then you can remove the transition in the inspector: in Transitions click on the symbol “-”

Click on the transition and press the Delete key.