Remove wrong commented out code from RenderLayer::updateLayerPositionsAfterScroll

Source/core/rendering/RenderLayer.h

Index: Source/core/rendering/RenderLayer.h
diff --git a/Source/core/rendering/RenderLayer.h b/Source/core/rendering/RenderLayer.h
index c3635f19261d259341f4a4806dc4b33e3c30195e..4b815dbb7a59c15f642d4c7493919124d89d0a48 100644
--- a/Source/core/rendering/RenderLayer.h
+++ b/Source/core/rendering/RenderLayer.h
@@ -649,11 +649,6 @@ private:
 
     unsigned m_containsDirtyOverlayScrollbars : 1;
 
-    // This is an optimization added for <table>.
-    // Currently cells do not need to update their repaint rectangles when scrolling. This also
-    // saves a lot of time when scrolling on a table.
-    const unsigned m_canSkipRepaintRectsUpdateOnScroll : 1;
-
     unsigned m_hasFilterInfo : 1;
     unsigned m_needsCompositingInputsUpdate : 1;
     unsigned m_childNeedsCompositingInputsUpdate : 1;