Fix rebase mishap in ForwardingAudioStreamFactory

There lines were accidentally readded after being removed,
so re-remove them.

Change-Id: I2ec3ab7114afd1a563cc5cf43e4611ddb55f01ca
Reviewed-on: https://chromium-review.googlesource.com/1061462Reviewed-by: Olga Sharonova <olka@chromium.org>
Commit-Queue: Olga Sharonova <olka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559086}

content/browser/media/forwarding_audio_stream_factory.cc

@@ -208,8 +208,6 @@ void ForwardingAudioStreamFactory::ResetRemoteFactoryPtr() {
   remote_factory_.reset();
   // The stream brokers will call a callback to be deleted soon, give them a
   // chance to signal an error to the client first.
-  inputs_.clear();
-  outputs_.clear();
 }
 
 }  // namespace content