Remove /run/network directory creation in codebase

and /etc/network/run directory symlink.

We no longer need to worry about the existence of this directory.
The system handles the creation.

Author: Olivier BLIN

etc/init.d/networking

@@ -6,7 +6,7 @@
 # Default-Start:     S
 # Default-Stop:      0 6
 # Short-Description: Raise network interfaces.
-# Description:       Prepare /run/network directory, ifstate file and raise network interfaces, or take them down.
+# Description:       Prepare ifstate file and raise network interfaces, or take them down.
 ### END INIT INFO
 
 RUN_DIR="/run/network"
@@ -128,9 +128,6 @@ ifup_hotplug () {
 ifupdown_init() {
     	# remove state file at boot
 	[ ! -e ${IFSTATE_LOCKFILE} ] && rm -f ${IFSTATE_FILE}
-	[ ! -e /run/network ] && mkdir -p /run/network &>/dev/null
-	[ ! -e /etc/network/run ] && \
-		ln -sf /run/network /etc/network/run &>/dev/null
 }
 
 case "$1" in

ifupdown2/ifupdown/statemanager.py

@@ -107,9 +107,6 @@ def init(self):
             except Exception as e:
                 raise Exception("statemanager: unable to create required directory: %s" % str(e))
 
-        if not os.path.exists(self.state_rundir):
-            os.makedirs(self.state_rundir)
-
         self.state_file = "%s/%s" % (self.state_dir, self.state_filename)
 
     def _init_makedirs_state_dir(self):

ifupdown2/sbin/start-networking

@@ -108,10 +108,6 @@ ifup_mgmt () {
 ifupdown_init() {
 	# remove state file at boot
 	[ ! -e ${IFSTATE_LOCKFILE} ] && rm -f ${IFSTATE_FILE}
-
-	[ ! -e /run/network ] && mkdir -p /run/network &>/dev/null
-	[ ! -e /etc/network/run ] && \
-		ln -sf /run/network /etc/network/run &>/dev/null
 }
 
 case "$1" in