This is because in v1.4+ (from this thread/Kisakuku) those settings are unnecessary. Stick with their posts.
This is an old version. Note the version number following Google Camera. It is based on an old version of the camera, all the extra hardware settings and stuff have become unnecessary as far as I can tell. Just because that says v4.0 AiO doesn't mean it's the most recent, because Google Camera is beyond 4.4.020 now.
This thread is a over a month old and certainly about an outdated version of this port. In the previous quote, it says v4.0 AiO, but you just said v1.4 here, even though it's not. I can see how this would be confusing to others.