Fix browser_bug521216.js, take 2

browser/base/content/test/browser_bug521216.js

@@ -1,4 +1,4 @@
-var expected = ["TabOpen", "onLocationChange", "onStateChange", "onLinkIconAvailable"];
+var expected = ["TabOpen", "onLocationChange", "onStateChange"];
 var actual = [];
 var tabIndex = -1;
 __defineGetter__("tab", function () gBrowser.tabContainer.childNodes[tabIndex]);