In M113 we made it possible to opt-in to spec-compliant VP9 using
scalabilityMode and scaleResolutionDownBy. Since this would change
behavior in some edge cases a kill-switch flag was also added.
It turns out it was not needed (current Stable: M114) so we can remove
the flag.
Bug: webrtc:14884
Change-Id: Ie3006164c4d6e90acad1d1f4df2fe2b6e3cb2c35
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/308683
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40277}
1cb54bee7a