[webrtc-pc] Section 4.2.6

aboba has just created a new issue for https://github.com/w3c/webrtc-pc:

== Section 4.2.6 ==
>From EKR: https://lists.w3.org/Archives/Public/public-webrtc/2017May/0166.html

   Gather ICE candidates for each media type in use (audio, video, and
   data). If the remote endpoint is not bundle-aware, negotiate only
   one audio and video track on separate transports.

The second sentence here (and below) are just information, they're
not instructions to the implementation, so they should be removed
or rewritten.

Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/1276 using your GitHub account