Remove unused unwrap maps from modifier loading into scene maps

To see what I mean more clearly see the attached jpegs.

1st: Unwrap dialog.

This shows maps that are associated with the unwrap modifier.

2nd: Those maps then appear in the scene materials in the material/map browser.

I can manually go and click remove on each of the maps in the unwrap dialog or click reset texture list which doesn't work 100% of the time. And then they no longer are in the scene material window.

So I was wondering why it does this as I would not need those sub-maps in the scene materials window, thus cluttering it up. See maps like checker pattern, UnwrapChecker, edge 1 etc

Maybe a script is available to clean up maps associated with the unwrap modifier much quicker than going into every unwrap modifier and resetting or removing the maps?

Thanks in advance.