ace no gutter / line numbers

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/ace/1.1.3/ace.js"></script>
<html>
 <head>
  <style type='text/css'>
   textarea {
   
    overflow:    scroll;
    overflow-y:  hidden;
    overflow-x:  scroll;
    overflow:    -moz-scrollbars-horizontal;
   }
  </style>
 </head>
 <body>
  <form>
   <textarea >This is a long line of text for testing purposes...</textarea>
  </form>
 </body>
</html>

CSS

#editor {
    border: 1px solid black;
    height: 200px;
    width: 300px;
}

JavaScript

var editor = ace.edit('editor')
editor.renderer.setShowGutter(false)