Remove no longer used SkipEncodingUnusedStreams.

R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/18829004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6753 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/experiments.h b/webrtc/experiments.h
index 3b019b4..ec871f2 100644
--- a/webrtc/experiments.h
+++ b/webrtc/experiments.h
@@ -21,15 +21,6 @@
   uint32_t min_rate;
 };
 
-struct SkipEncodingUnusedStreams {
-  SkipEncodingUnusedStreams() : enabled(false) {}
-  explicit SkipEncodingUnusedStreams(bool set_enabled)
-    : enabled(set_enabled) {}
-  virtual ~SkipEncodingUnusedStreams() {}
-
-  const bool enabled;
-};
-
 struct AimdRemoteRateControl {
   AimdRemoteRateControl() : enabled(false) {}
   explicit AimdRemoteRateControl(bool set_enabled)