Remove compiler feature detection for = delete

sky/engine/core/dom/CharacterData.h

Index: sky/engine/core/dom/CharacterData.h
diff --git a/sky/engine/core/dom/CharacterData.h b/sky/engine/core/dom/CharacterData.h
index 93163f9ef569981861ccf4b3e2f90ad701b18a47..5898d078f41a535976916e710e3fc77e72d2a152 100644
--- a/sky/engine/core/dom/CharacterData.h
+++ b/sky/engine/core/dom/CharacterData.h
@@ -77,8 +77,8 @@ private:
     virtual bool offsetInCharacters() const override final;
     void setDataAndUpdate(const String&, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, RecalcStyleBehavior = DoNotRecalcStyle);
 
-    bool isContainerNode() 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 isContainerNode() const = delete; // This will catch anyone doing an unnecessary check.
+    bool isElementNode() const = delete; // This will catch anyone doing an unnecessary check.
 };
 
 DEFINE_NODE_TYPE_CASTS(CharacterData, isCharacterDataNode());