Deletes one of the two // nogncheck comments in peerconnection_interface.h. Bug: webrtc:8733 Change-Id: I7cda4957206c4c5f36261517718b526734bad68a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/150798 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Reviewed-by: Benjamin Wright <benwright@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29247}