Remove unused files.

Even though occasional commits did happen to these files, they still
specify directories like /usr/share/man/cat4/tahoe, /usr/include/pascal,
/usr/X11R4 and so on, so calling them "maintained" would seem a bold claim.
ok sthen@ henning@

src/etc/mtree/4.4BSD.root

@@ -1,171 +0,0 @@
-#	$OpenBSD: 4.4BSD.root,v 1.12 2014/01/08 21:52:22 deraadt Exp $
-#	$NetBSD: 4.4BSD.root,v 1.2 1996/05/12 23:30:32 thorpej Exp $
-#
-#	   user: bostic
-#	machine: vangogh.CS.Berkeley.EDU
-#	   tree: /
-#	   date: Tue Jul 20 13:15:45 1993
-
-# .
-/set type=file gname=wheel uname=root mode=0755
-.               type=dir
-
-# ./a
-/set type=file gname=guest uname=root mode=0755
-a               type=dir gname=wheel
-# ./a
-..
-
-
-# ./altroot
-altroot         type=dir gname=wheel
-# ./altroot
-..
-
-
-# ./amd
-/set type=file gname=wheel uname=root mode=0755
-amd             type=dir mode=0555
-# ./amd
-..
-
-
-# ./b
-b               type=dir mode=0775
-# ./b
-..
-
-
-# ./bin
-/set type=file gname=bin uname=root mode=0555
-bin             type=dir uname=root gname=wheel mode=0755
-# ./bin
-..
-
-
-# ./c
-/set type=file gname=wheel uname=root mode=0750
-c               type=dir mode=0755
-# ./c
-..
-
-
-# ./dev
-/set type=file gname=operator uname=root mode=0640
-dev             type=dir gname=wheel mode=0755
-
-# ./dev
-..
-
-
-# ./dump
-/set type=file gname=wheel uname=root mode=0750
-dump		type=dir gname=operator uname=operator mode=0775
-# ./dump
-..
-
-
-# ./etc
-/set type=file gname=wheel uname=root mode=0644
-etc             type=dir mode=0755
-
-# ./etc/disklabels
-/set type=file gname=wheel uname=root mode=0444
-disklabels      type=dir mode=0775
-# ./etc/disklabels
-..
-
-
-# ./etc/mtree
-/set type=file gname=wheel uname=root mode=0600
-mtree           type=dir mode=0755
-# ./etc/mtree
-..
-
-
-# ./etc/namedb
-/set type=file gname=wheel uname=root mode=0600
-namedb           type=dir mode=0755
-
-# ./etc/namedb/tmp
-/set type=file gname=wheel uname=root mode=0600
-tmp           type=dir mode=0755
-# ./etc/namedb/tmp
-..
-
-# ./etc/namedb
-..
-
-# ./etc/ppp
-/set type=file gname=wheel uname=root mode=0644
-ppp      type=dir mode=0755
-# ./etc/ppp
-..
-
-# ./etc/sliphome
-/set type=file gname=wheel uname=root mode=0755
-sliphome        type=dir
-# ./etc/sliphome
-..
-
-# ./etc/signify
-/set type=file gname=wheel uname=root mode=0755
-signify		type=dir
-# ./etc/signify
-..
-
-# ./etc/ssh
-/set type=file gname=wheel uname=root mode=0755
-ssh		type=dir
-# ./etc/ssh
-..
-
-# ./etc
-..
-
-
-# ./home
-home            type=dir mode=0555
-# ./home
-..
-
-
-# ./mnt
-mnt             type=dir
-# ./mnt
-..
-
-
-# ./root
-/set type=file gname=wheel uname=root mode=0644
-root            type=dir mode=0755
-# ./root
-..
-
-
-# ./sbin
-/set type=file gname=bin uname=root mode=0555
-sbin            type=dir uname=root gname=wheel mode=0755
-# ./sbin
-..
-
-
-# ./tmp
-/set type=file gname=wheel uname=root mode=0600
-tmp             type=dir mode=01777
-# ./tmp
-..
-
-
-# ./usr
-/set type=file gname=wheel uname=root mode=0755
-usr             type=dir
-# ./usr
-..
-
-
-# ./var
-/set type=file gname=wheel uname=root mode=0755
-var             type=dir
-# ./var
-..

src/etc/mtree/4.4BSD.var

@@ -1,404 +0,0 @@
-#	$OpenBSD: 4.4BSD.var,v 1.14 2011/04/19 21:39:18 schwarze Exp $
-#	$NetBSD: 4.4BSD.var,v 1.3 1996/05/12 23:30:47 thorpej Exp $
-#
-#	   user: bostic
-#	machine: vangogh.CS.Berkeley.EDU
-#	   tree: /var
-#	   date: Tue Jul 20 12:55:06 1993
-
-# .
-/set type=file gname=wheel uname=root mode=0755
-.               type=dir
-
-# ./account
-/set type=file gname=wheel uname=root mode=0644
-account         type=dir mode=0755
-# ./account
-..
-
-
-# ./backups
-/set type=file gname=wheel uname=root mode=0644
-backups         type=dir mode=0700
-# ./backups
-..
-
-
-# ./crash
-/set type=file gname=wheel uname=root mode=0660
-crash           type=dir uname=root mode=0770
-# ./crash
-..
-
-
-# ./db
-/set type=file gname=wheel uname=root mode=0755
-db              type=dir
-# ./db
-..
-
-
-# ./emacs
-/set type=file gname=wheel uname=root mode=0777
-emacs           type=dir mode=0755
-
-# ./emacs/lock
-/set type=file gname=wheel uname=root mode=0666
-lock            type=dir uname=root mode=0777
-# ./emacs/lock
-..
-
-# ./emacs
-..
-
-
-# ./games
-/set type=file gname=games uname=games mode=0644
-games           type=dir mode=0775
-
-# ./games/hackdir
-/set type=file gname=bin uname=games mode=0444
-hackdir         type=dir gname=games mode=0755
-# ./games/hackdir
-..
-
-# ./games/phantasia
-/set type=file gname=bin uname=games mode=0660
-phantasia       type=dir gname=games mode=0755
-# ./games/phantasia
-..
-
-# ./games
-..
-
-
-# ./log
-/set type=file gname=wheel uname=root mode=0644
-log             type=dir mode=0755
-
-# ./log/rdist
-/set type=file gname=staff uname=root mode=0644
-rdist           type=dir mode=0775
-# ./log/rdist
-..
-
-# ./log
-..
-
-
-# ./mail
-/set type=file gname=guest uname=root mode=0600
-mail            type=dir uname=root gname=wheel mode=0755
-# ./mail
-..
-
-
-# ./obj
-/set type=file gname=wsrc uname=root mode=0775
-obj             type=dir gname=wheel
-# ./obj
-..
-
-
-# ./quotas
-quotas          type=dir uname=root gname=operator mode=0750
-# ./quotas
-..
-
-
-# ./run
-/set type=file gname=wheel uname=root mode=0644
-run             type=dir mode=0755
-# ./run
-..
-
-
-# ./rwho
-/set type=file gname=wheel uname=root mode=0644
-rwho            type=dir mode=0755
-# ./rwho
-..
-
-
-# ./spool
-/set type=file gname=wheel uname=root mode=0755
-spool           type=dir
-
-# ./spool/ftp
-/set type=file gname=wheel uname=root mode=0755
-ftp             type=dir
-
-# ./spool/ftp/bin
-/set type=file gname=wheel uname=root mode=0555
-bin             type=dir mode=0755
-# ./spool/ftp/bin
-..
-
-
-# ./spool/ftp/etc
-/set type=file gname=wheel uname=root mode=0644
-etc             type=dir mode=0755
-# ./spool/ftp/etc
-..
-
-
-# ./spool/ftp/hidden
-/set type=file gname=wheel uname=bostic mode=0644
-hidden          type=dir uname=root mode=0751
-# ./spool/ftp/hidden
-..
-
-
-# ./spool/ftp/pub
-/set type=file gname=wheel uname=root mode=0777
-pub             type=dir
-
-
-# ./spool/ftp/pub/incoming
-/set type=file gname=wheel uname=root mode=0644
-incoming        type=dir uname=root mode=0733
-# ./spool/ftp/pub/incoming
-..
-
-
-# ./spool/ftp/pub
-..
-
-# ./spool/ftp
-..
-
-
-# ./spool/mqueue
-/set type=file gname=wheel uname=root mode=0600
-mqueue          type=dir mode=0755
-# ./spool/mqueue
-..
-
-
-# ./spool/news
-/set type=file gname=news uname=news mode=0775
-news            type=dir uname=root gname=wheel mode=0755
-
-# ./spool/news/data
-/set type=file gname=news uname=news mode=0775
-data            type=dir
-
-# ./spool/news/data/OLD
-OLD             type=dir
-# ./spool/news/data/OLD
-..
-
-
-# ./spool/news/data/ctlbin
-ctlbin          type=dir
-# ./spool/news/data/ctlbin
-..
-
-
-# ./spool/news/data/innd
-innd            type=dir
-# ./spool/news/data/innd
-..
-
-
-# ./spool/news/data/trn
-trn             type=dir
-# ./spool/news/data/trn
-..
-
-# ./spool/news/data
-..
-
-
-# ./spool/news/news.archive
-news.archive    type=dir
-# ./spool/news/news.archive
-..
-
-
-# ./spool/news/out.going
-out.going       type=dir
-# ./spool/news/out.going
-..
-
-
-# ./spool/news/spool
-/set type=file gname=news uname=news mode=0775
-spool           type=dir
-
-# ./spool/news/spool/in.coming
-/set type=file gname=news uname=news mode=0775
-in.coming       type=dir
-
-# ./spool/news/spool/in.coming/bad
-bad             type=dir
-# ./spool/news/spool/in.coming/bad
-..
-
-
-# ./spool/news/spool/in.coming/tmp
-tmp             type=dir
-# ./spool/news/spool/in.coming/tmp
-..
-
-# ./spool/news/spool/in.coming
-..
-
-# ./spool/news/spool
-..
-
-# ./spool/news
-..
-
-
-# ./spool/output
-/set type=file gname=daemon uname=daemon mode=0775
-output          type=dir uname=root gname=wheel mode=0755
-# ./spool/output
-..
-
-
-# ./spool/sockets
-/set type=file gname=wheel uname=root mode=0777
-sockets         type=dir
-
-# ./spool/sockets/X11
-X11             type=dir
-# ./spool/sockets/X11
-..
-
-# ./spool/sockets
-..
-
-
-# ./spool/uucp
-/set type=file gname=daemon uname=uucp mode=0755
-uucp            type=dir
-
-# ./spool/uucp/AUDIT
-AUDIT           type=dir
-# ./spool/uucp/AUDIT
-..
-
-
-# ./spool/uucp/C.
-C.              type=dir
-# ./spool/uucp/C.
-..
-
-
-# ./spool/uucp/CORRUPT
-CORRUPT         type=dir
-# ./spool/uucp/CORRUPT
-..
-
-
-# ./spool/uucp/D.
-D.              type=dir
-# ./spool/uucp/D.
-..
-
-
-# ./spool/uucp/D.X
-D.X             type=dir
-# ./spool/uucp/D.X
-..
-
-
-# ./spool/uucp/LCK
-LCK             type=dir mode=0777
-# ./spool/uucp/LCK
-..
-
-
-# ./spool/uucp/LOG
-/set type=file gname=daemon uname=uucp mode=0755
-LOG             type=dir
-
-# ./spool/uucp/LOG/uucico
-uucico          type=dir
-# ./spool/uucp/LOG/uucico
-..
-
-
-# ./spool/uucp/LOG/uucp
-uucp            type=dir
-# ./spool/uucp/LOG/uucp
-..
-
-
-# ./spool/uucp/LOG/uux
-uux             type=dir
-# ./spool/uucp/LOG/uux
-..
-
-
-# ./spool/uucp/LOG/uuxqt
-uuxqt           type=dir
-# ./spool/uucp/LOG/uuxqt
-..
-
-
-# ./spool/uucp/LOG/xferstats
-xferstats       type=dir
-# ./spool/uucp/LOG/xferstats
-..
-
-# ./spool/uucp/LOG
-..
-
-
-# ./spool/uucp/STST
-STST            type=dir
-# ./spool/uucp/STST
-..
-
-
-# ./spool/uucp/TM.
-TM.             type=dir
-# ./spool/uucp/TM.
-..
-
-
-# ./spool/uucp/X.
-X.              type=dir
-# ./spool/uucp/X.
-..
-
-
-# ./spool/uucp/XTMP
-XTMP            type=dir
-# ./spool/uucp/XTMP
-..
-
-# ./spool/uucp
-..
-
-
-# ./spool/uucppublic
-uucppublic      type=dir mode=0755
-# ./spool/uucppublic
-..
-
-# ./spool
-..
-
-
-# ./tmp
-/set type=file gname=wheel uname=nobody mode=0600
-tmp             type=dir uname=root mode=01777
-
-# ./vi.recover
-/set type=file gname=wheel uname=nobody mode=0600
-vi.recover	type=dir uname=root mode=01777
-# ./vi.recover
-..
-
-# ./tmp
-..
-
-# ./users
-/set type=file gname=wheel uname=nobody mode=0600
-users	type=dir uname=root mode=755
-# ./users
-..