ensure to work login button of header

lib/views/layout/layout.html

@@ -134,7 +134,7 @@
         </ul>
       </li>
       {% else %}
-      <li id="login-user"><a href="/login" id="login"><i class="fa fa-user"></i> Login</a></li>
+      <li id="login-user"><a href="/login"><i class="fa fa-user"></i> Login</a></li>
       {% endif %}
       {% if config.crowi['app:confidential'] && config.crowi['app:confidential'] != '' %}
       <li class="confidential"><a href="#">{{ config.crowi['app:confidential'] }}</a></li>