Remove REM units.

sky/engine/core/css/resolver/ElementResolveContext.h

Index: sky/engine/core/css/resolver/ElementResolveContext.h
diff --git a/sky/engine/core/css/resolver/ElementResolveContext.h b/sky/engine/core/css/resolver/ElementResolveContext.h
index da475c88f77ca09718b7b3b7bb96bfb2f4f9328e..0e360c85e38772ea4b2db06c8e0b57e1a83bf7a0 100644
--- a/sky/engine/core/css/resolver/ElementResolveContext.h
+++ b/sky/engine/core/css/resolver/ElementResolveContext.h
@@ -42,13 +42,11 @@ public:
 
     Element* element() const { return m_element; }
     const ContainerNode* parentNode() const { return m_parentNode; }
-    const RenderStyle* rootElementStyle() const { return m_rootElementStyle; }
     bool distributedToInsertionPoint() const { return m_distributedToInsertionPoint; }
 
 private:
     RawPtr<Element> m_element;
     RawPtr<ContainerNode> m_parentNode;
-    RenderStyle* m_rootElementStyle;
     bool m_distributedToInsertionPoint;
 };