This move further clarifies that the file and its class are deprecated. It also cleans up the modules/video_coding root folder a bit. No functional changes are intended. Bug: webrtc:14876 Change-Id: Ieafdb2640b12c254edfac04e98f86f9170c5a71a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/295870 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39483}