Shrug. OK, but that doesn't explain the reason for them. I suppose it doesn't have to make sense to me, as long as stuff works.They are part of the package jpackage-utils, so you should not remove them. You can check with rpm -qf if a directory/file is part of any package.
While I don't know the potential harm of removing these empty directories, I would not lose any sleep over it. The space these empty directories take up on your drive truely is neglible.
Remmy
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