Did you try deleting the contents of the Nav component so you have only the Nav element? Experiment a little, not everything is locked even though too much is. They opened the Nav component for us a bit so you can do that.
EDIT: Never mind, they have classes attached to the Nav element that cannot be removed.
Unless those classes won’t interfere with your page.
I did post a very long time ago asking for these blank elements that don’t have classes attached as they do now and were unlocked. Unfortunately, the only way you can do what you want to do is to either create it using Custom Code, or using Divs with class “nav”.