Remove compiler feature detection for = delete

sky/engine/core/dom/Document.h

Index: sky/engine/core/dom/Document.h
diff --git a/sky/engine/core/dom/Document.h b/sky/engine/core/dom/Document.h
index 6dd5c690e2e9b41b586b26dde63aa807010e9810..f8f42e820288c9502403782ccb3063240e814b07 100644
--- a/sky/engine/core/dom/Document.h
+++ b/sky/engine/core/dom/Document.h
@@ -322,7 +322,7 @@ public:
     void prepareForDestruction();
 
     // If you have a Document, use renderView() instead which is faster.
-    void renderer() const WTF_DELETED_FUNCTION;
+    void renderer() const = delete;
 
     RenderView* renderView() const { return m_renderView; }
 
@@ -680,9 +680,9 @@ protected:
 private:
     friend class Node;
 
-    bool isDocumentFragment() const WTF_DELETED_FUNCTION; // This will catch anyone doing an unnecessary check.
-    bool isDocumentNode() const WTF_DELETED_FUNCTION; // This will catch anyone doing an unnecessary check.
-    bool isElementNode() const WTF_DELETED_FUNCTION; // This will catch anyone doing an unnecessary check.
+    bool isDocumentFragment() const = delete; // This will catch anyone doing an unnecessary check.
+    bool isDocumentNode() const = delete; // This will catch anyone doing an unnecessary check.
+    bool isElementNode() const = delete; // This will catch anyone doing an unnecessary check.
 
     ScriptedAnimationController& ensureScriptedAnimationController();
     virtual EventQueue* eventQueue() const override final;