remove unused reduce order code

src/pathops/SkReduceOrder.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkReduceOrder_DEFINED
 #define SkReduceOrder_DEFINED
 
 #include "SkPath.h"
 #include "SkPathOpsCubic.h"
 #include "SkPathOpsLine.h"
 #include "SkPathOpsQuad.h"
 #include "SkTArray.h"
 
 union SkReduceOrder {
     enum Quadratics {
         kNo_Quadratics,
         kAllow_Quadratics
     };
-    enum Style {
-        kStroke_Style,
-        kFill_Style
-    };
 
-    int reduce(const SkDCubic& cubic, Quadratics, Style);
+    int reduce(const SkDCubic& cubic, Quadratics);
     int reduce(const SkDLine& line);
-    int reduce(const SkDQuad& quad, Style);
+    int reduce(const SkDQuad& quad);
 
     static SkPath::Verb Cubic(const SkPoint pts[4], SkPoint* reducePts);
     static SkPath::Verb Quad(const SkPoint pts[3], SkPoint* reducePts);
 
     SkDLine fLine;
     SkDQuad fQuad;
     SkDCubic fCubic;
 };
 
 #endif