busybox: disable module utils, kmodloader provides them

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39118 3c298f89-4303-0410-b956-a3cf2f4a3e73
iproute2: reduce .ipk package size from ~100k down to ~60k

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39119 3c298f89-4303-0410-b956-a3cf2f4a3e73