clean code

lib/views/widget/not_found_content.html

@@ -42,11 +42,6 @@
     <div class="tab-pane {% if req.body.pageForm %}active{% endif %}" id="edit">
       <div id="page-editor">{% if pageForm.body %}{{ pageForm.body }}{% endif %}</div>
     </div>
-    <div class="tab-pane" id="hackmd">
-      <div id="hackmd-editor">
-        <iframe width="100%" src="http://localhost:3100/oMx0W0k4Tb-sRkkPrxHDoA?both" frameborder="0"></iframe>
-      </div>
-    </div>
     {% include '../_form.html' %}
 
   </div>