TCPPort's incoming_only_ member seems unused and there was a TODO about this. This CL just removes it. Bug: webrtc:10198 Change-Id: I216c291159a32fa2924309affa3769a4be116fd0 Reviewed-on: https://webrtc-review.googlesource.com/c/120931 Reviewed-by: Steve Anton <steveanton@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26538}