Bug 1337468: Don't offer RID extension for audio streams r=ng

MozReview-Commit-ID: LicY2Ok0V60

--HG--
extra : rebase_source : db27711ab5bdb7b667b54e644341641d21c512bd

media/webrtc/signaling/src/jsep/JsepSessionImpl.cpp

@@ -332,9 +332,6 @@ JsepSessionImpl::SetParameters(const std::string& streamId,
   if (addVideoExt != SdpDirectionAttribute::kInactive) {
     AddVideoRtpExtension("urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id", addVideoExt);
   }
-  if (addAudioExt != SdpDirectionAttribute::kInactive) {
-    AddAudioRtpExtension("urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id", addAudioExt);
-  }
 
   it->mTrack->SetJsConstraints(constraints);