bsd-user: Remove bsd_type

Remove keeping track of which type of bsd we're running on. It's no
longer referenced in the code. Building bsd-user on NetBSD or OpenBSD
isn't possible, let alone running that code. Stop pretending that we can
do the cross BSD thing since there's been a large divergence since 2000
that makes this nearly impossible between FreeBSD and {Net,Open}BSD and
at least quite difficult between NetBSD and OpenBSD.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

bsd-user/qemu.h

@@ -29,13 +29,6 @@
 
 extern char **environ;
 
-enum BSDType {
-    target_freebsd,
-    target_netbsd,
-    target_openbsd,
-};
-extern enum BSDType bsd_type;
-
 #include "exec/user/thunk.h"
 #include "target_arch.h"
 #include "syscall_defs.h"