remove SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG -- dead code

src/utils/SkGatherPixelRefsAndRects.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGatherPixelRefsAndRects_DEFINED
 #define SkGatherPixelRefsAndRects_DEFINED
 
@@ skipping 29 matching lines @@
     virtual int width() const SK_OVERRIDE { return fSize.width(); }
     virtual int height() const SK_OVERRIDE { return fSize.height(); }
     virtual bool isOpaque() const SK_OVERRIDE { return false; }
     virtual SkBitmap::Config config() const SK_OVERRIDE {
         return SkBitmap::kNo_Config;
     }
     virtual SkImageInfo imageInfo() const SK_OVERRIDE {
         return fEmptyBitmap.info();
     }
 
-#ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG
-    virtual void writePixels(const SkBitmap& bitmap, int x, int y,
-                             SkCanvas::Config8888 config8888) SK_OVERRIDE {
-        NotSupported();
-    }
-#endif
     virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE { return NULL; }
 
 protected:
     virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) SK_OVERRIDE {
         return false;
     }
     virtual void clear(SkColor color) SK_OVERRIDE {
         NothingToDo();
     }
     virtual void drawPaint(const SkDraw& draw, const SkPaint& paint) SK_OVERRIDE {
@@ skipping 278 matching lines @@
     static void NotSupported() {
         SkDEBUGFAIL("this method should never be called");
     }
 
     static void NothingToDo() {}
 
     typedef SkBaseDevice INHERITED;
 };
 
 #endif // SkGatherPixelRefsAndRects_DEFINED