Delete a bunch of paint invalidation rect computing code.

sky/engine/core/rendering/RenderLayer.cpp

Index: sky/engine/core/rendering/RenderLayer.cpp
diff --git a/sky/engine/core/rendering/RenderLayer.cpp b/sky/engine/core/rendering/RenderLayer.cpp
index 6246d9ef590e1965eceb5847b7e8ea55bdf7072c..2bfcc5ac60a215fba0a25e4a026a839660d1c3ef 100644
--- a/sky/engine/core/rendering/RenderLayer.cpp
+++ b/sky/engine/core/rendering/RenderLayer.cpp
@@ -291,12 +291,6 @@ void RenderLayer::mapRectToPaintInvalidationBacking(const RenderObject* renderOb
     renderObject->mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
 }
 
-LayoutRect RenderLayer::computePaintInvalidationRect(const RenderObject* renderObject, const RenderLayer* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState)
-{
-    // FIXME(sky): Remove
-    return renderObject->computePaintInvalidationRect(paintInvalidationContainer->renderer(), paintInvalidationState);
-}
-
 void RenderLayer::dirty3DTransformedDescendantStatus()
 {
     RenderLayerStackingNode* stackingNode = m_stackingNode->ancestorStackingContextNode();