Remove remaining testing of getPropertyCSSValue

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 66 matching lines @@
         eval("window." + keyPath + " = " + valuePath);
         return eval("window." + keyPath) === eval("window." + valuePath);
     } catch(e) {
         return false;
     }
 }
 
 var windowReadWriteProperties = [
     "Attr", 
     "CDATASection", 
-    "CSSPrimitiveValue", 
     "CSSRule", 
     "CSSStyleDeclaration", 
     "CharacterData", 
     "Comment", 
     "DOMException", 
     "DOMImplementation", 
     "DOMParser", 
     "Document", 
     "DocumentFragment", 
     "DocumentType", 
@@ skipping 220 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>