Remove Entity interface

LayoutTests/fast/dom/Window/get-set-properties.html

 <p>This page tests getting and setting window properties and functions.</p>
 <pre id="console"></pre>
 
 <script>
 function log(s)
 {
     document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
 }
 
 function shouldBe(a, b)
@@ skipping 79 matching lines @@
     "CSSValue", 
     "CharacterData", 
     "Comment", 
     "DOMException", 
     "DOMImplementation", 
     "DOMParser", 
     "Document", 
     "DocumentFragment", 
     "DocumentType", 
     "Element", 
-    "Entity", 
     "EvalError", 
     "Event", 
     "HTMLAnchorElement", 
     "HTMLAppletElement", 
     "HTMLAreaElement", 
     "HTMLBRElement", 
     "HTMLBaseElement", 
     "HTMLBodyElement", 
     "HTMLButtonElement", 
     "HTMLCanvasElement", 
@@ skipping 209 matching lines @@
 
     log("\n----- tests for getting/setting event handlers -----\n");
 
     for (var i = 0; i < windowEventHandlers.length; i++) {
         var property = windowEventHandlers[i];
         shouldBeTrue("canGet('" + property + "')");
         shouldBeTrue("canSetWithCallable('" + property + "')");
     }
 }
 </script>