AA: packages: drop bmx6, bmxd, olsrd, batman and batman-adv in preparation to move to an external feed


git-svn-id: svn://svn.openwrt.org/openwrt@36534 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: feeds: use openwrt-routing feed

git-svn-id: svn://svn.openwrt.org/openwrt@36535 3c298f89-4303-0410-b956-a3cf2f4a3e73