This constructor isn't used in production. Removing it further
made the construction state of the class simpler, allowed for removal
of the separate Init() method and making more members const.
Bug: none
Change-Id: Ibc8516a01ce7e385207251d841d21bb7b72c9d9a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/318281
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40678}
3756e29b15