This is for cleaning loss based bwe v2 implementation according to some comments from https://webrtc-review.googlesource.com/c/src/+/261240. Bug: webrtc:12707 Change-Id: I2cb278f136cddcd0eeb2c5e4c319a9cc6aab94a0 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/262251 Commit-Queue: Diep Bui <diepbp@webrtc.org> Reviewed-by: Björn Terelius <terelius@webrtc.org> Reviewed-by: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36875}