Revert "mkenums: Support public/private trigraph"
Revert "mkenums: Support public/private trigraph"

This reverts commit 9ba17d511e325eec1e0c1c27cb4d37de4f12ac1e.

This conflicts with the python port in the meson branch.

endlessm/glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib