rtc: Relax the max_qp setting on scene change for lower reslon

Remove the resolution condition to relax the max_qp on detected
scene changes, for camera mode.

The original change was made here, but guarded for
resolutions >= 720p:
https://chromium-review.googlesource.com/c/webm/libvpx/+/6311075/7

Bug: b:399575647
Change-Id: I6ee2ff3abcfd7f0ff69be5d9099d787207d2ccfa
1 file changed