Remove unused constants, so chrome can enable a warning for that. Patch from thakis@

R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2296006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4844 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc

@@ -22,13 +22,6 @@
 extern MatlabEngine eng;  // Global variable defined elsewhere.
 #endif
 
-// Local for this file.
-namespace {
-
-const float kFracMs = 4.294967296E6f;
-
-}  // namespace
-
 #ifdef _WIN32
 // Disable warning C4355: 'this' : used in base member initializer list.
 #pragma warning(disable : 4355)