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/SampleText.cpp b/samplecode/SampleText.cpp
index c6aaa52..aa314dd 100644
--- a/samplecode/SampleText.cpp
+++ b/samplecode/SampleText.cpp
@@ -176,7 +176,7 @@
      //   printf(" %d %g", i, x);
         x = powf(x, ee);
      //   printf(" %g", x);
-        int xx = SkScalarRound(SkFloatToScalar(x * 255));
+        int xx = SkScalarRound(x * 255);
      //   printf(" %d\n", xx);
         fTable[i] = SkToU8(xx);
     }