Remove the webkitallowfullscreen content attribute

LayoutTests/fullscreen/full-screen-iframe-with-mixed-allow-webkitallow-attribute.html

Index: LayoutTests/fullscreen/full-screen-iframe-with-mixed-allow-webkitallow-attribute.html
diff --git a/LayoutTests/fullscreen/full-screen-iframe-with-mixed-allow-webkitallow-attribute.html b/LayoutTests/fullscreen/full-screen-iframe-with-mixed-allow-webkitallow-attribute.html
deleted file mode 100644
index ce7e69e7a4d046795c009c0c06031f31b5d2a05c..0000000000000000000000000000000000000000
--- a/LayoutTests/fullscreen/full-screen-iframe-with-mixed-allow-webkitallow-attribute.html
+++ /dev/null
@@ -1,25 +0,0 @@
-<p>Test entering full screen for a nested iframe works with a mixture of both
-allowfullscreen and webkitallowfullscreen.</p>
-<p>To test manually, click into inner frame, the page should enter full screen mode.</p>
-<script src="full-screen-test.js"></script>
-<iframe webkitallowfullscreen src="resources/full-screen-iframe-with-mixed-allow-webkitallow-iframe1.html">
-</iframe>
-<script>
-window.onmessage = function () { // iframes have been loaded and messaged us.
-  // Send click to center of iframe.
-  iframe = document.getElementsByTagName("iframe")[0];
-  x = iframe.offsetLeft + iframe.offsetWidth / 2;
-  y = iframe.offsetTop + iframe.offsetHeight / 2;
-  if (window.eventSender) {
-      eventSender.mouseMoveTo(x, y);
-      eventSender.mouseDown();
-      eventSender.mouseUp();
-  }
-
-  window.onmessage = function (messageEvent) {
-      consoleWrite(messageEvent.data);
-      endTest();
-  }
-}
-</script>
-