Remove the deprecated way of configuring APM. Bug: webrtc:5298 Change-Id: Idcedf1fe4a121adfcf2881003579cd58ac42a2b9 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/232302 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35026}