Niels Möller acf4f55df3 Delete unused FifoBuffer methods
Unused since https://webrtc-review.googlesource.com/c/src/+/186665

Bug: webrtc:11988, webrtc:6424
Change-Id: Ib09e6b862f7550d07d5adf8ce82b74698419730a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/233081
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35097}
2021-09-27 14:32:47 +00:00
..
2021-09-27 14:32:47 +00:00