Bug 1328373 (part 2) - Remove mozilla_sampler_get_responsiveness declaration. r=mstange.

It's unused.

--HG--
extra : rebase_source : 6e1e0f896f10367bb538c8e5839e2ac36174230c

tools/profiler/public/GeckoProfilerFunc.h

@@ -59,8 +59,6 @@ void mozilla_sampler_responsiveness(const mozilla::TimeStamp& time);
 
 void mozilla_sampler_frame_number(int frameNumber);
 
-const double* mozilla_sampler_get_responsiveness();
-
 mozilla::UniquePtr<char[]> mozilla_sampler_get_profile(double aSinceTime);
 
 JSObject *mozilla_sampler_get_profile_data(JSContext* aCx, double aSinceTime);