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, 10 deletions

diff --git a/etc/mtree/BSD.usr.dist b/etc/mtree/BSD.usr.dist
index f047d657af00..df3777bae8e0 100644
--- a/etc/mtree/BSD.usr.dist
+++ b/etc/mtree/BSD.usr.dist
@@ -221,14 +221,6 @@
             ..
             iscsi
             ..
-            isdn
-                contrib
-                ..
-                i4brunppp
-                ..
-                v21
-                ..
-            ..
             kld
                 cdev
                     module
@@ -344,8 +336,6 @@
         ..
         info
         ..
-        isdn
-        ..
         locale
             UTF-8
             ..