Removing ARCNET stuffs

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

Hi,

The next sacrifice is ARCNET. It seems it hasn't been
used for long years (7 years or more):
http://mail-index.netbsd.org/source-changes/2015/05/22/msg066175.html

So I'm trying to remove them but the target files are
much more than I had expected (see the bellow diffstat).

Please stop me if you want to keep the files.


The patch is here:
http://www.netbsd.org/~ozaki-r/remove-arcnet.diff

and diffstat is this:
$ diffstat remove-arcnet.diff
 b/distrib/sets/lists/comp/mi            |    2
 b/sys/arch/amiga/conf/DRACO             |    4
 b/sys/arch/amiga/conf/GENERIC           |    3
 b/sys/arch/amiga/conf/GENERIC.in        |    3
 b/sys/arch/amiga/conf/INSTALL           |    3
 b/sys/arch/amiga/conf/MDINSTALL         |    3
 b/sys/arch/amiga/conf/files.amiga       |    4
 b/sys/arch/amigappc/conf/GENERIC        |    3
 b/sys/arch/amigappc/conf/NULL           |    3
 b/sys/arch/amigappc/conf/files.amigappc |    4
 b/sys/conf/files                        |    6
 b/sys/net/Makefile                      |    2
 b/sys/net/bpf.c                         |    7
 b/sys/netinet/if_arp.c                  |   34 -
 b/sys/netinet6/in6.c                    |    1
 b/sys/netinet6/in6_ifattach.c           |   16
 b/sys/netinet6/nd6.c                    |    8
 b/sys/netinet6/nd6_nbr.c                |    1
 sys/arch/amiga/dev/if_bah_zbus.c        |  152 ----
 sys/dev/ic/smc90cx6.c                   |  985 --------------------------------
 sys/dev/ic/smc90cx6reg.h                |   80 --
 sys/dev/ic/smc90cx6var.h                |   76 --
 sys/net/if_arc.h                        |  126 ----
 sys/net/if_arcsubr.c                    |  662 ---------------------
 24 files changed, 2 insertions(+), 2186 deletions(-)


Thanks,
  ozaki-r