remove info about guides hackfest

railties/guides/source/index.html.erb

@@ -30,7 +30,6 @@ Ruby on Rails Guides
 <% content_for :index_section do %>
 <div id="subCol">
   <dl>
-    <dd class="warning">Rails Guides are a result of the ongoing <a href="http://hackfest.rubyonrails.org">Guides hackfest</a>, and a work in progress.</dd>
     <dd class="work-in-progress">Guides marked with this icon are currently being worked on. While they might still be useful to you, they may contain incomplete information and even errors. You can help by reviewing them and posting your comments and corrections to the author.</dd>
   </dl>
 </div>