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diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/dom/events.js b/tools/addon-sdk-1.4/packages/api-utils/lib/dom/events.js
deleted file mode 100644
index da9c93d..0000000
--- a/tools/addon-sdk-1.4/packages/api-utils/lib/dom/events.js
+++ /dev/null
@@ -1,169 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Jetpack.
- *
- * The Initial Developer of the Original Code is
- * the Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2011
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Irakli Gozalishvili <gozala@mozilla.com> (Original Author)
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-"use strict";
-
-// Utility function that returns copy of the given `text` with last character
-// removed if it is `"s"`.
-function singularify(text) {
-  return text[text.length - 1] === "s" ? text.substr(0, text.length - 1) : text;
-}
-
-// Utility function that takes event type, argument is passed to
-// `document.createEvent` and returns name of the initializer method of the
-// given event. Please note that there are some event types whose initializer
-// methods can't be guessed by this function. For more details see following
-// link: https://developer.mozilla.org/En/DOM/Document.createEvent
-function getInitializerName(category) {
-  return "init" + singularify(category);
-}
-
-/**
- * Registers an event `listener` on a given `element`, that will be called
- * when events of specified `type` is dispatched on the `element`.
- * @param {Element} element
- *    Dom element to register listener on.
- * @param {String} type
- *    A string representing the
- *    [event type](https://developer.mozilla.org/en/DOM/event.type) to
- *    listen for.
- * @param {Function} listener
- *    Function that is called whenever an event of the specified `type` 
- *    occurs.
- * @param {Boolean} capture
- *    If true, indicates that the user wishes to initiate capture. After
- *    initiating capture, all events of the specified type will be dispatched
- *    to the registered listener before being dispatched to any `EventTarget`s
- *    beneath it in the DOM tree. Events which are bubbling upward through
- *    the tree will not trigger a listener designated to use capture.
- *    See [DOM Level 3 Events](http://www.w3.org/TR/DOM-Level-3-Events/#event-flow)
- *    for a detailed explanation.
- */
-function on(element, type, listener, capture) {
-  // `capture` defaults to `false`.
-  capture = capture || false;
-  element.addEventListener(type, listener, capture);
-}
-exports.on = on;
-
-/**
- * Registers an event `listener` on a given `element`, that will be called
- * only once, next time event of specified `type` is dispatched on the
- * `element`.
- * @param {Element} element
- *    Dom element to register listener on.
- * @param {String} type
- *    A string representing the
- *    [event type](https://developer.mozilla.org/en/DOM/event.type) to
- *    listen for.
- * @param {Function} listener
- *    Function that is called whenever an event of the specified `type` 
- *    occurs.
- * @param {Boolean} capture
- *    If true, indicates that the user wishes to initiate capture. After
- *    initiating capture, all events of the specified type will be dispatched
- *    to the registered listener before being dispatched to any `EventTarget`s
- *    beneath it in the DOM tree. Events which are bubbling upward through
- *    the tree will not trigger a listener designated to use capture.
- *    See [DOM Level 3 Events](http://www.w3.org/TR/DOM-Level-3-Events/#event-flow)
- *    for a detailed explanation.
- */
-function once(element, type, listener, capture) {
-  on(element, type, function selfRemovableListener(event) {
-    removeListener(element, type, selfRemovableListener, capture);
-    listener.apply(this, arguments);
-  }, capture);
-}
-exports.once = once;
-
-/**
- * Unregisters an event `listener` on a given `element` for the events of the
- * specified `type`.
- *
- * @param {Element} element
- *    Dom element to unregister listener from.
- * @param {String} type
- *    A string representing the
- *    [event type](https://developer.mozilla.org/en/DOM/event.type) to
- *    listen for.
- * @param {Function} listener
- *    Function that is called whenever an event of the specified `type` 
- *    occurs.
- * @param {Boolean} capture
- *    If true, indicates that the user wishes to initiate capture. After
- *    initiating capture, all events of the specified type will be dispatched
- *    to the registered listener before being dispatched to any `EventTarget`s
- *    beneath it in the DOM tree. Events which are bubbling upward through
- *    the tree will not trigger a listener designated to use capture.
- *    See [DOM Level 3 Events](http://www.w3.org/TR/DOM-Level-3-Events/#event-flow)
- *    for a detailed explanation.
- */
-function removeListener(element, type, listener, capture) {
-  element.removeEventListener(type, listener, capture);
-}
-exports.removeListener = removeListener;
-
-/**
- * Emits event of the specified `type` and `category` on the given `element`.
- * Specified `settings` are used to initialize event before dispatching it.
- * @param {Element} element
- *    Dom element to dispatch event on.
- * @param {String} type
- *    A string representing the
- *    [event type](https://developer.mozilla.org/en/DOM/event.type).
- * @param {Object} options
- *    Options object containing following properties:
- *    - `category`: String passed to the `document.createEvent`. Option is
- *      optional and defaults to "UIEvents".
- *    - `initializer`: If passed it will be used as name of the method used
- *      to initialize event. If omitted name will be generated from the
- *      `category` field by prefixing it with `"init"` and removing last
- *      character if it matches `"s"`.
- *    - `settings`: Array of settings that are forwarded to the event
- *      initializer after firs `type` argument.
- * @see https://developer.mozilla.org/En/DOM/Document.createEvent
- */
-function emit(element, type, { category, initializer, settings }) {
-  category = category || "UIEvents";
-  initializer = initializer || getInitializerName(category);
-  let document = element.ownerDocument;
-  let event = document.createEvent(category);
-  event[initializer].apply(event, [type].concat(settings));
-  element.dispatchEvent(event);
-};
-exports.emit = emit;