diff --git a/browser/base/content/tabview/modules/groups.jsm b/browser/base/content/tabview/modules/groups.jsm
deleted file mode 100644
index 5e4be04e626f..000000000000
--- a/browser/base/content/tabview/modules/groups.jsm
+++ /dev/null
@@ -1,70 +0,0 @@
-/* ***** 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 TabView Groups.
- *
- * The Initial Developer of the Original Code is
- * Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2010
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Edward Lee <edilee@mozilla.com>
- * Ian Gilman <ian@iangilman.com>
- *
- * 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 ***** */
-
-const Cc = Components.classes;
-const Ci = Components.interfaces;
-const Cu = Components.utils;
-const Cr = Components.results;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-let EXPORTED_SYMBOLS = ["Groups"];
-
-let Groups = let (T = {
-  //////////////////////////////////////////////////////////////////////////////
-  //// Public
-  //////////////////////////////////////////////////////////////////////////////
-
-  //////////////////////////////////////////////////////////////////////////////
-  //// Private
-  //////////////////////////////////////////////////////////////////////////////
-
-  init: function init() {
-    // Only allow calling init once
-    T.init = function() T;
-    
-    // load all groups data
-    // presumably we can load from app global, not a window
-    // how do we know which window has which group?
-    // load tab data to figure out which go into which group
-    // set up interface for subscribing to our data
-
-    return T;
-  }
-}) T.init();
diff --git a/browser/base/content/tabview/tabview.js b/browser/base/content/tabview/tabview.js
index 0c8b8e5a5877..53ca53224ba4 100644
--- a/browser/base/content/tabview/tabview.js
+++ b/browser/base/content/tabview/tabview.js
@@ -3,7 +3,6 @@ const Ci = Components.interfaces;
 const Cu = Components.utils;
 
 Cu.import("resource:///modules/tabview/AllTabs.jsm");
-Cu.import("resource:///modules/tabview/groups.jsm");
 Cu.import("resource:///modules/tabview/utils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");