Remove SK_LEGACY_SET_ROTATE_SNAP

Chromium has been rebaselined with the new value:
  https://crrev.com/c/3807782

Change-Id: I4e2c8238824725fbedd21ada77d7b04e17b76e51
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/566338
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/include/core/SkScalar.h b/include/core/SkScalar.h
index 90f7ce5..e1203ef 100644
--- a/include/core/SkScalar.h
+++ b/include/core/SkScalar.h
@@ -145,11 +145,7 @@
     return SkScalarAbs(x-y) <= tolerance;
 }
 
-#if defined(SK_LEGACY_SET_ROTATE_SNAP)
-#define SK_ScalarSinCosNearlyZero   SK_ScalarNearlyZero
-#else
 #define SK_ScalarSinCosNearlyZero   (SK_Scalar1 / (1 << 16))
-#endif
 
 static inline float SkScalarSinSnapToZero(SkScalar radians) {
     float v = SkScalarSin(radians);