6in4: remove some obsolete functions

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31768 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/6in4/files/6in4.sh

@@ -18,19 +18,6 @@ find_6in4_wanip() {
 	echo "${ip%%[^0-9.]*}"
 }
 
-# Hook into scan_interfaces() to synthesize a .device option
-# This is needed for /sbin/ifup to properly dispatch control
-# to setup_interface_6in4() even if no .ifname is set in
-# the configuration.
-scan_6in4() {
-	config_set "$1" device "6in4-$1"
-}
-
-coldplug_interface_6in4() {
-	setup_interface_6in4 "6in4-$1" "$1"
-}
-
-
 tun_error() {
 	local cfg="$1"; shift;