[Feature] Amend superfluous is_peer_far_in_future check

[vicsn]

🚀 Feature

is_peer_far_in_future seems not to do anything, because down the call chain into update_to_next_round , we need to see quorum anyway and we're only advancing one round at a time?. So we can consider not advancing at all when is_peer_far_in_future` and removing that variable.