This reverts commit 2f4bc6416651be40ef8f95a4695e6b7c41f18666. Reason for revert: Breaks downstream test Original change's description: > Clean up last_packet_received_time_ as it's no longer used. > > Bug: webrtc:15377 > Change-Id: I5453b9fd572a04dbea3241a2eb1c8ad8bb8b1186 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/320560 > Reviewed-by: Erik Språng <sprang@webrtc.org> > Reviewed-by: Björn Terelius <terelius@webrtc.org> > Commit-Queue: Ying Wang <yinwa@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#40792} Bug: webrtc:15377 Change-Id: Ifa57671cc479cdd86f543c4edc236221beb76f90 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/321340 Auto-Submit: Björn Terelius <terelius@webrtc.org> Reviewed-by: Ying Wang <yinwa@webrtc.org> Owners-Override: Björn Terelius <terelius@webrtc.org> Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Björn Terelius <terelius@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40797}