Delete method RTPPayloadRegistry::ulpfec_payload_type(). RtpVideoStreamReceiver can check its own config to know what the payload type is. Bug: webrtc:8995 Change-Id: Idc2bc7d747d77127f2b2261ff50610422e5686a6 Reviewed-on: https://webrtc-review.googlesource.com/61501 Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22414}