build: Drop -runtime-debug and -devel
build: Drop -runtime-debug and -devel

I basically wrote the build code to generate 4 combinations as an
illustration of how ostree can represent OS configuration matricies,
but these two are not useful.  People should only use -runtime and
-devel-debug basically.

vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,GNOME/gnome-ostree,GNOME/gnome-ostree,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,chergert/gnome-continuous,GNOME/gnome-ostree