This "Old POSIX/DKUUG borrowed format" handling is original to the file
and doesn't seem to have ever been used, i.e. id/t-t-c doesn't seem to
have ever been called with argv[1] == POSIX.
Upcoming is a POSIX charmap, which would inadvertently trigger this.
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
