Remove AudioContext createChannelMerger() method until thread safety issues can be properly addre...

AudioContext.cpp

Index: AudioContext.cpp
===================================================================
--- AudioContext.cpp	(revision 94137)
+++ AudioContext.cpp	(working copy)
@@ -402,13 +402,6 @@
     return AudioChannelSplitter::create(this, m_destinationNode->sampleRate());
 }
 
-PassRefPtr<AudioChannelMerger> AudioContext::createChannelMerger()
-{
-    ASSERT(isMainThread());
-    lazyInitialize();
-    return AudioChannelMerger::create(this, m_destinationNode->sampleRate());
-}
-
 void AudioContext::notifyNodeFinishedProcessing(AudioNode* node)
 {
     ASSERT(isAudioThread());