Remove deprecated network functions BUG=chromium-os:16557 TEST=gmerge libcros Change-Id: I7c9e33ccdc6be1b924d75e9a5fb1bcf156e20056 Reviewed-on: https://gerrit.chromium.org/gerrit/18669 Commit-Ready: Ryo Hashimoto <hashimoto@chromium.org> Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org> Tested-by: Ryo Hashimoto <hashimoto@chromium.org>