diff --git a/layout/generic/test/test_bug459921.html b/layout/generic/test/test_bug459921.html
deleted file mode 100644
index 3d96438f1c86..000000000000
--- a/layout/generic/test/test_bug459921.html
+++ /dev/null
@@ -1,57 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<!--
-https://bugzilla.mozilla.org/show_bug.cgi?id=459921
--->
-<head>
-  <title>Test for Bug 459921</title>
-  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
-  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
-  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
-  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
-</head>
-<body>
-<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=459921">Mozilla Bug 459921</a>
-<p id="display"></p>
-<div id="content">
-World <span id="wide">Wide</span> <span id="web">Web</span>
-</div>
-<pre id="test">
-<script class="testbody" type="text/javascript">
-
-/** Test for Bug 459921 **/
-
-function test() {
-  var sel = window.getSelection();
-
-  // Ctrl[Cmd]-doubleclick "Web".
-  var web = document.getElementById('web');
-  synthesizeMouse(web, 3, 3, { type: 'mousedown', clickCount: 2, accelKey: true });
-
-  // Drag to the very beginning of "Wide" and release.
-  var wide = document.getElementById('wide');
-  synthesizeMouse(wide, 1, 3, { type: 'mousemove', accelKey: true });
-  synthesizeMouse(wide, 1, 3, { type: 'mouseup', clickCount: 2, accelKey: true });
-
-  var selstr = sel.toString();
-  is(selstr, 'Wide Web');
-
-  // Hack to work around bug 426195
-  synthesizeMouse(document.body, 0, 0, { type: 'mousedown' });
-  synthesizeMouse(document.body, 0, 0, { type: 'mousemove' });
-  synthesizeMouse(document.body, 0, 0, { type: 'mouseup' });
-
-  SimpleTest.finish();
-}
-
-function doe() {
-  setTimeout(test, 0);
-}
-
-addLoadEvent(doe);
-SimpleTest.waitForExplicitFinish();
-
-</script>
-</pre>
-</body>
-</html>
