remove unused GM flags

gm/dropshadowimagefilter.cpp

Index: gm/dropshadowimagefilter.cpp
diff --git a/gm/dropshadowimagefilter.cpp b/gm/dropshadowimagefilter.cpp
index 5a8c7a2a8b413955b013df1b345e824fc46a4615..f60f22c70f6bdd91e24834ed71d79f378fbe28b9 100644
--- a/gm/dropshadowimagefilter.cpp
+++ b/gm/dropshadowimagefilter.cpp
@@ -111,14 +111,6 @@ protected:
         canvas->drawRect(r, paint);
     }
 
-    virtual uint32_t onGetFlags() const {
-        // Because of the use of drawSprite, this test is excluded
-        // from scaled replay tests because drawSprite ignores the
-        // reciprocal scale that is applied at record time, which is
-        // the intended behavior of drawSprite.
-        return kSkipScaledReplay_Flag | kSkipTiled_Flag;
-    }
-
     virtual void onDraw(SkCanvas* canvas) {
         void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
             draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text