These were introduced by mistake during the addition of the layout
system. They have been private since 2011. It seems safe to assume that
nothing uses them anymore and they can now be removed safely.
Change-Id: I98d030096f9cb06fccc25233fe4da17d0213050e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6075
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
fc2f1a3247