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diff --git a/tools/addon-sdk-1.3/packages/api-utils/lib/array.js b/tools/addon-sdk-1.3/packages/api-utils/lib/array.js
deleted file mode 100644
index a41acdd..0000000
--- a/tools/addon-sdk-1.3/packages/api-utils/lib/array.js
+++ /dev/null
@@ -1,102 +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";
-
-/**
- * Returns `true` if given `array` contain given `element` or `false`
- * otherwise.
- * @param {Array} array
- *    Target array.
- * @param {Object|String|Number|Boolean} element
- *    Element being looked up.
- * @returns {Boolean}
- */
-var has = exports.has = function has(array, element) {
-  // shorter and faster equivalent of `array.indexOf(element) >= 0`
-  return !!~array.indexOf(element);
-};
-
-/**
- * Adds given `element` to the given `array` if it does not contain it yet.
- * `true` is returned if element was added otherwise `false` is returned.
- * @param {Array} array
- *    Target array.
- * @param {Object|String|Number|Boolean} element
- *    Element to be added.
- * @returns {Boolean}
- */
-var add = exports.add = function add(array, element) {
-  var result;
-  if ((result = !has(array, element)))
-    array.push(element);
-
-  return result;
-};
-
-/**
- * Removes first occurrence of the given `element` from the given `array`. If
- * `array` does not contain given `element` `false` is returned otherwise
- * `true` is returned.
- * @param {Array} array
- *    Target array.
- * @param {Object|String|Number|Boolean} element
- *    Element to be removed.
- * @returns {Boolean}
- */
-exports.remove = function remove(array, element) {
-  var result;
-  if ((result = has(array, element)))
-    array.splice(array.indexOf(element), 1);
-
-  return result;
-};
-
-/**
- * Produces a duplicate-free version of the given `array`.
- * @param {Array} array
- *    Source array.
- * @returns {Array}
- */
-exports.unique = function unique(array) {
-  var value = [];
-  return array.forEach(function(element) {
-    add(value, element);
-  });
-  return value;
-};