COMPLETELY removing Clefs

I am a drum instructor designing worksheets that are a series of drum kit exercises. The look I am attempting to achieve is completely clean single measure exercises using start and end repeat barlines, separated by horizontal frames. The first two measures (separated by the horizontal frame) are both populated with clefs that are simply unnecessary for this type of sheet music. I've found other forum discussions that show you how to uncheck 'create clef for all systems' which doesn't eliminate the first clefs, and I understand how to make them invisible, but this still creates an obnoxious space in front of the first two barlines that is just empty. Is there any way to COMPLETELY remove clefs from a mscz?