These are unused except in tests, and just add clutter. Bug: webrtc:9824 Change-Id: Ica209d09850f5ff9b122ce21306aaf1bbfc7bda4 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/138280 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Steve Anton <steveanton@webrtc.org> Commit-Queue: Bjorn Mellem <mellem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28064}