Remove Blink-WebKit-only document.createEvent strings

third_party/WebKit/LayoutTests/fast/dom/Orientation/script-tests/create-event-orientationchange.js

-description('Tests that document.createEvent() works with orientationChange if enabled')
-
-function handleTestResult()
-{
-    document.getElementById('result').innerHTML = "PASS";
-}
-
-if (window.internals && internals.runtimeFlags.orientationEventEnabled) {
-    window.addEventListener('orientationchange', handleTestResult, false);
-
-    try {
-        var event = document.createEvent("OrientationEvent");
-        event.initEvent("orientationchange", false, false);
-        window.dispatchEvent(event);
-    } catch(e) {
-        document.getElementById('result').innerHTML = "FAIL... orientationChange event doesn't appear to be enabled or implemented.";
-    }
-} else {
-    handleTestResult();
-}