Remove the webkitallowfullscreen content attribute

LayoutTests/fullscreen/full-screen-iframe-allowed-prefixed.html

Index: LayoutTests/fullscreen/full-screen-iframe-allowed-prefixed.html
diff --git a/LayoutTests/fullscreen/full-screen-iframe-allowed-prefixed.html b/LayoutTests/fullscreen/full-screen-iframe-allowed-prefixed.html
deleted file mode 100644
index ebbdf4125ab69d01e29fa1a61a894420f03dc870..0000000000000000000000000000000000000000
--- a/LayoutTests/fullscreen/full-screen-iframe-allowed-prefixed.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<p>Test for <a href="http://bugs.webkit.org/show_bug.cgi?id=56264">bug 56264</a>: 
-Handle entering full screen security restrictions</p>
-<p>To test manually, click the "Go full screen" button - the page should enter full screen mode.</p>
-<script src="full-screen-test.js"></script>
-<script>
-function runTest() {
-    var frame = document.getElementById('frame');
-
-    waitForEvent(frame.contentDocument, 'webkitfullscreenchange', function() { 
-            test("document.getElementById('frame').contentDocument.width==document.width")
-            endTest();
-    });
-
-    runWithKeyDown(function() {
-        frame.contentDocument.documentElement.webkitRequestFullScreen();
-    });
-}
-</script>
-<iframe id="frame" src="resources/inner.html" width="300" height="100" onload="runTest()" webkitallowfullscreen>
-</iframe>