remove SkFloatToScalar macro

BUG=
R=reed@google.com, djsollen@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/85463005

git-svn-id: http://skia.googlecode.com/svn/trunk@12385 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleDither.cpp b/samplecode/SampleDither.cpp
index 2468df7..38d67ad 100644
--- a/samplecode/SampleDither.cpp
+++ b/samplecode/SampleDither.cpp
@@ -55,7 +55,7 @@
         SkScalar y = r.centerY();
         SkScalar radius = r.width() / 2;
         SkScalar thickness = p.getStrokeWidth();
-        SkScalar sweep = SkFloatToScalar(360.0f);
+        SkScalar sweep = 360.0f;
         SkPath path;
 
         path.moveTo(x + radius, y);