This trial has been unused for some time, time to clean it up.
Bug: webrtc:10144
Change-Id: I2b1bd9ff0335efdc07f47a361878915f1be383a7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267410
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37421}