Unused since cl https://codereview.webrtc.org/2999063002 (#19665). Bug: webrtc:7694 Change-Id: Ie8e87fc32a7b2f8000e85bdd33c2346477058b0c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/140120 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28161}