webrtc own implementaions are no longer needed since webrtc uses c++17 Bug: None Change-Id: I38bb295334182b73d333a453001d256e6df172d9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/270924 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37716}