This CL removes the legacy reporting of histogram data for AEC2. Bug: webrtc:5298 Change-Id: I838e729e0fb78d28e16de0fa79ddf5c857682d65 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/135101 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27834}