merged timeline and viewer nodes together

app/node/factory.cpp

@@ -8,7 +8,6 @@
 #include "distort/transform/transform.h"
 #include "input/media/video/video.h"
 #include "input/media/audio/audio.h"
-#include "output/timeline/timeline.h"
 #include "output/track/track.h"
 #include "output/viewer/viewer.h"
 #include "external.h"
@@ -127,8 +126,6 @@ Node *NodeFactory::CreateInternal(const NodeFactory::InternalID &id)
     return new VideoInput();
   case kAudioInput:
     return new AudioInput();
-  case kTimelineOutput:
-    return new TimelineOutput();
   case kTrackOutput:
     return new TrackOutput();
   case kViewerOutput: