remove dead methods now that we use specials exclusively for imagefilters

include/core/SkDevice.h

Index: include/core/SkDevice.h
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index 76d464445c67de35c2f27e9c9150df312649d445..f06abdeee438515071b542287d17dc047423d77e 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -348,12 +348,6 @@ protected:
         return NULL;
     }
 
-    /**
-     *  Calls through to drawSprite, processing the imagefilter.
-     */
-    virtual void drawSpriteWithFilter(const SkDraw&, const SkBitmap&,
-                                      int x, int y, const SkPaint&);
-
     // A helper function used by derived classes to log the scale factor of a bitmap or image draw.
     static void LogDrawScaleFactor(const SkMatrix&, SkFilterQuality);