next68k ftp snapshot cleanup

In a few days, I'm going to clean up the next68k arch developer
directory, since most everything in it is either rolled into the
release or is really old cross development tools dating from before
build.sh.  (Correct me if I'm wrong here.)

I'll probably stash away an archive, but if there's anything
there you need, grab it now.  Similarly, if there's anything there
that you think should stick around, let me know.

The directory I'm talking about is at:
  ftp://ftp.netbsd.org/pub/NetBSD/arch/next68k/

Thanks,
Darrin