Remove Attr.isId and Attr.ownerElement.

LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js

Index: LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js
diff --git a/LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js b/LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js
index 640150b797cac74024b5e943ec1fce15be3a18ce..45fd66018f3530bf58611c19d53da989aad984c8 100644
--- a/LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js
+++ b/LayoutTests/dom/svg/level3/xpath/Attribute_Nodes.js
@@ -138,11 +138,6 @@ outresult = evaluator.evaluate(expression,contextNode,resolver,xpathType,inresul
        parent = outNode.parentNode;
 
       assertNull("S1.2.2-Attribute-Nodes-parentNode",parent);
-    owner = outNode.ownerElement;
-
-      ownerType = owner.nodeType;
-
-      assertEquals("S1.2.2-Attribute-Nodes-owner-nodeType",1,ownerType);
        outNode = outresult.iterateNext();
       
 	}