Delete an assortment of unneeded paint invalidation code.

sky/engine/core/rendering/RenderView.h

Index: sky/engine/core/rendering/RenderView.h
diff --git a/sky/engine/core/rendering/RenderView.h b/sky/engine/core/rendering/RenderView.h
index db866377146e4e60809b910c7367a5dbeb679ee0..cd185a42e429ff886a74c60f6664808d24a6dd5c 100644
--- a/sky/engine/core/rendering/RenderView.h
+++ b/sky/engine/core/rendering/RenderView.h
@@ -75,8 +75,6 @@ public:
 
     virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
 
-    void invalidatePaintForRectangle(const LayoutRect&) const;
-
     virtual void paint(PaintInfo&, const LayoutPoint&) override;
     virtual void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&) override;
 
@@ -116,7 +114,6 @@ public:
 
     void pushLayoutState(LayoutState&);
     void popLayoutState();
-    virtual void invalidateTreeIfNeeded(const PaintInvalidationState&) override final;
 
     void addIFrame(RenderIFrame* iframe);
     void removeIFrame(RenderIFrame* iframe);