There is now only one sequence number unwrapper so this is redundant.
Bug: webrtc:13982
Change-Id: I210378e069366eb21dea0051f83d7431e4177057
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/290892
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39085}