Deleting Un-exposed drawings from the library on mass?

Is there a way to delete un-exposed drawings from the library on mass, not one by one.

Is this possible through the x-sheet or possibly through some type of templating ?

I’m using harmony 14 and i’m trying to clean up some animation that will be templated for re-use, though i want to remove all off the un-exposed drawings so they dont get used by accident.
I’m dealing with 12 different drawing layers and approx 30 -80 un exposed drawing elements per drawing layer so there’s a fair chunk to remove one by one.
Any suggestions would be great.