remove update_url occurences

IPython/frontend/html/notebook/static/js/notebookmain.js

@@ -60,7 +60,6 b' $(document).ready(function () {'
     IPython.layout_manager.do_resize();
     $([IPython.events]).on('notebook_loaded.Notebook', function () {
         IPython.layout_manager.do_resize();
-        IPython.save_widget.update_url();
     })
     IPython.notebook.load_notebook($('body').data('notebookId'));
 

IPython/frontend/html/notebook/static/js/savewidget.js

@@ -120,15 +120,6 b' var IPython = (function (IPython) {'
     };
 
 
-    SaveWidget.prototype.update_url = function () {
-        var notebook_id = IPython.notebook.get_notebook_id();
-        if (notebook_id !== null) {
-            var new_url = $('body').data('baseProjectUrl') + notebook_id;
-            window.history.replaceState({}, '', new_url);
-        };
-    };
-
-
     SaveWidget.prototype.set_save_status = function (msg) {
         this.element.find('span#save_status').html(msg);
     }