Remove the single-sigma version of SkDropShadowImageFilter::Create().

include/effects/SkDropShadowImageFilter.h

Index: include/effects/SkDropShadowImageFilter.h
diff --git a/include/effects/SkDropShadowImageFilter.h b/include/effects/SkDropShadowImageFilter.h
index 59d3145a000da61d23a1d457a0155507f5f4ecbe..efd9032e487b3c26bd8be7f9838a8f95559817b8 100644
--- a/include/effects/SkDropShadowImageFilter.h
+++ b/include/effects/SkDropShadowImageFilter.h
@@ -11,10 +11,6 @@
 
 class SK_API SkDropShadowImageFilter : public SkImageFilter {
 public:
-    static SkDropShadowImageFilter* Create(SkScalar dx, SkScalar dy, SkScalar sigma,
-                                           SkColor color, SkImageFilter* input = NULL) {
-        return SkNEW_ARGS(SkDropShadowImageFilter, (dx, dy, sigma, color, input));
-    }
     static SkDropShadowImageFilter* Create(SkScalar dx, SkScalar dy,
                                            SkScalar sigmaX, SkScalar sigmaY, SkColor color,
                                            SkImageFilter* input = NULL,
@@ -26,8 +22,6 @@ public:
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDropShadowImageFilter)
 
 protected:
-    SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigma, SkColor,
-                            SkImageFilter* input);
     SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigmaX, SkScalar sigmaY, SkColor,
                             SkImageFilter* input, const CropRect* cropRect);
     explicit SkDropShadowImageFilter(SkReadBuffer&);