remove empty style function of save widget

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

@@ -19,14 +19,10 b' define(['
         this.keyboard_manager = options.keyboard_manager;
         if (this.selector !== undefined) {
             this.element = $(selector);
-            this.style();
             this.bind_events();
         }
     };
 
-    SaveWidget.prototype.style = function () {
-    };
-
 
     SaveWidget.prototype.bind_events = function () {
         var that = this;