Delete unused constant kConfigParameterSize.

webrtc/common_types.h

Index: webrtc/common_types.h
diff --git a/webrtc/common_types.h b/webrtc/common_types.h
index fe3cc51663f2807f71be60b8220f559093a1c649..e1a4c77d37adf184bb43b0fd87070d635f54d917 100644
--- a/webrtc/common_types.h
+++ b/webrtc/common_types.h
@@ -434,7 +434,6 @@ enum RawVideoType {
 };
 
 // Video codec
-enum { kConfigParameterSize = 128 };
 enum { kPayloadNameSize = 32 };
 enum { kMaxSimulcastStreams = 4 };
 enum { kMaxSpatialLayers = 5 };