remove dependencies to namespace in Keyboardmanager

notebook/static/base/js/namespace.js

@@ -57,6 +57,7 @@ define(function(){
     jglobal('RawCell','base/js/textcell');
     jglobal('Cell','base/js/cell');
     jglobal('OutputArea','notebook/js/outputarea');
+    jglobal('KeyboardManager','notebook/js/keyboardmanager');
 
     Jupyter.version = "4.0.0.dev";
     Jupyter._target = '_blank';

notebook/static/notebook/js/keyboardmanager.js

@@ -9,11 +9,10 @@
  */
 
 define([
-    'base/js/namespace',
     'jquery',
     'base/js/utils',
     'base/js/keyboard',
-], function(IPython, $, utils, keyboard) {
+], function($, utils, keyboard) {
     "use strict";
     
     // Main keyboard manager for the notebook
@@ -223,9 +222,5 @@ define([
         });
     };
 
-
-    // For backwards compatibility.
-    IPython.KeyboardManager = KeyboardManager;
-
     return {'KeyboardManager': KeyboardManager};
 });