Configurability via SetSelectiveRetransmissions was deleted in https://webrtc-review.googlesource.com/c/119920. Delete constants kRetransmitFECPackets and kRetransmitAllPackets, which are never enabled in production code. Also move the declaration of RetransmissionMode from rtp_rtcp_defines.h to rtp_sender_video.h, to reduce visibility to applications. Bug: None Change-Id: I70dcf7532aa3415a2449d8d807c500c1f149bf6d Reviewed-on: https://webrtc-review.googlesource.com/c/120053 Reviewed-by: Stefan Holmer <stefan@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26570}