Revert "b2g: build rilproxy"

Built for all targets.

This reverts commit 3839707ee22a92822bb19c61e620d7bde08f67c9.
include: remove unneeded header
use custom init.qcom.wifi.sh
update readme, remove patches and manifests

Move pathes and manifests to B2G-CAF organization.
https://github.com/B2G-CAF/android_local_manifest