Un-deprecate Attr.nodeValue and Attr.textContent

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index 0020f1fa57345fd234e946b5cd2e04a934f932b2..35393fd5726b1dd5fc25952d001741b02dbdfe48 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -760,12 +760,6 @@ String UseCounter::deprecationMessage(Feature feature)
     case NodeIteratorDetach:
         return "'NodeIterator.detach' is now a no-op, as per DOM (http://dom.spec.whatwg.org/#dom-nodeiterator-detach).";
 
-    case AttrNodeValue:
-        return replacedBy("Attr.nodeValue", "value");
-
-    case AttrTextContent:
-        return replacedBy("Attr.textContent", "value");
-
     case NodeIteratorExpandEntityReferences:
         return "'NodeIterator.expandEntityReferences' is deprecated and has been removed from DOM. It always returns false.";