remove SkFloatToScalar macro

bench/RectBench.cpp

Index: bench/RectBench.cpp
diff --git a/bench/RectBench.cpp b/bench/RectBench.cpp
index 2937e5dafe5137f493ecf200ec997c7cddb80313..200fb0d330877abc8e9fa10234ce6a94255d4f87 100644
--- a/bench/RectBench.cpp
+++ b/bench/RectBench.cpp
@@ -186,7 +186,7 @@ protected:
     }
 
     virtual void onDraw(SkCanvas* canvas) {
-        static const SkScalar kHalfRectSize = SkFloatToScalar(0.75f);
+        static const SkScalar kHalfRectSize = 0.75f;
 
         SkPaint paint;
         this->setupPaint(&paint);