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/src/core/SkGeometry.cpp b/src/core/SkGeometry.cpp
index 9b15f9f..11d52b5 100644
--- a/src/core/SkGeometry.cpp
+++ b/src/core/SkGeometry.cpp
@@ -1134,9 +1134,9 @@
     // instead of down
     if (cubic[3].fY > cubic[0].fY) {
         upper_t = SK_Scalar1;
-        lower_t = SkFloatToScalar(0);
+        lower_t = 0;
     } else {
-        upper_t = SkFloatToScalar(0);
+        upper_t = 0;
         lower_t = SK_Scalar1;
     }
     do {