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/tests/BlurTest.cpp b/tests/BlurTest.cpp
index 9c40aa7..a1eaca9 100644
--- a/tests/BlurTest.cpp
+++ b/tests/BlurTest.cpp
@@ -349,7 +349,7 @@
     int groundTruthResult[kSize];
     int bruteForce1DResult[kSize];
 
-    SkScalar sigma = SkFloatToScalar(10.0f);
+    SkScalar sigma = 10.0f;
 
     for (int i = 0; i < 4; ++i, sigma /= 10) {