remove all broadcom interfaces from bridges and bring them down completely when wifi down is called

SVN-Revision: 5116

package/base-files/default/sbin/ifup

@@ -10,12 +10,5 @@ case "$iftype" in
 esac
 
 for dev in $ifname; do
-	brctl show | grep "$dev" >/dev/null && {
-		# interface is still part of a bridge, correct that
-
-		for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
-			brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
-		done
-	}
 	setup_interface "$dev" "$1"
 done