Bug 1204757: [MSE] P2. Remove use of MediaDecoder::NotifyWaitingForResourcesStatusChanged(). r=cpearce

dom/media/mediasource/SourceBuffer.cpp

@@ -466,7 +466,6 @@ SourceBuffer::AppendDataCompletedWithSuccess(bool aHasActiveTracks)
     if (!mActive) {
       mActive = true;
       mMediaSource->SourceBufferIsActive(this);
-      mMediaSource->GetDecoder()->NotifyWaitingForResourcesStatusChanged();
     }
   }
   if (mActive) {