madwifi: remove an unimportant part of the ibss node handling fix, which led...

madwifi: remove an unimportant part of the ibss node handling fix, which led to a regression in ap-to-ap wds operation

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17576 3c298f89-4303-0410-b956-a3cf2f4a3e73