Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and

parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re

1 files changed, 0 insertions, 5 deletions

diff --git a/share/Makefile b/share/Makefile
index bd3f4396651c..5143ea8f9735 100644
--- a/share/Makefile
+++ b/share/Makefile
@@ -9,7 +9,6 @@ SUBDIR=	${_colldef} \
 	${_dict} \
 	${_doc} \
 	${_examples} \
-	${_isdn} \
 	${_man} \
 	${_me} \
 	misc \
@@ -52,10 +51,6 @@ _me=		me
 _examples=	examples
 .endif
 
-.if ${MK_I4B} != "no"
-_isdn=		isdn
-.endif
-
 .if ${MK_DICT} != "no"
 _dict=	 	dict
 .endif