Cleanup Kobo integration

cps/templates/config_edit.html

@@ -104,10 +104,6 @@
                     <!--option-- value="3" {% if config.config_updatechannel == 3 %}selected{% endif %}>{{_('Nightly (Automatic)')}}</option-->
             </select>
         </div>
-        <div class="form-group">
-          <label for="config_server_url">{{_('Server Url. This is only used for the (experimental) Kobo device library sync')}}</label>
-          <input type="text" class="form-control" name="config_server_url" id="config_server_url" value="{% if config.config_server_url != None %}{{ config.config_server_url }}{% endif %}" autocomplete="off">
-        </div>
       </div>
     </div>
   </div>

cps/templates/user_edit.html

@@ -27,10 +27,6 @@
       <input type="email" class="form-control" name="kindle_mail" id="kindle_mail" value="{{ content.kindle_mail if content.kindle_mail != None }}">
     </div>
     <div class="form-group">
-    <div class="form-group">
-        <label for="kobo_user_key">{{_('KoboStore UserKey')}}</label>
-        <input type="password" class="form-control" name="kobo_user_key" id="kobo_user_key" value="" autocomplete="off">
-    </div>
     <label for="locale">{{_('Language')}}</label>
         <select name="locale" id="locale" class="form-control">
             {%  for translation in translations %}