elfutils: revert r35558

libdwfl which is a libdw dependency requires argp-standalone at least.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@35563 3c298f89-4303-0410-b956-a3cf2f4a3e73