I do not think so as well. And I do not think that is needed.
Because for normal usage case in QS, you use the QS objects to another html based website, so you actually do not directly use this black navigation bar sheet from QS.
And actually, I do not like this black navigation bar at first, but find it is really helpful when the dash become more complex. It is like the "current selection" and "search" objects in Qlikview. And actually, I add these 2 objects to all my QV dashes, so I think that is why it is added by default in QS.