Remove summit event notices

Comment these out so that it's easy to add the next event.

Change-Id: I7984eb151bf647b98e693f50197737c554edb23a

www/community.html

@@ -60,6 +60,7 @@
                   <h2>Join the Community</h2>
                 </header>
 
+		<!--
                 <h3>Meet the Zuul Community at These Events</h3>
                 <p>Join the Zuul community where you can meet developers, get
                    on-boarded as a contributor and learn from users running
@@ -69,6 +70,7 @@
                             >OpenStack Summit</a>, November 13-15, 2018,
                              Berlin, Germany</li>
                 </ul>
+		-->
 
                 <h3>Join the Mailing List</h3>
   	        <a href="http://lists.zuul-ci.org/cgi-bin/mailman/listinfo" class="image right"><img src="images/lists.png" alt="" /></a>

www/index.html

@@ -54,12 +54,14 @@
 
       <!-- Banner -->
         <section id="banner">
+	  <!-- Add notices here
           <p>
             <strong>Meet the Zuul Community at the OpenStack Summit, November
                 13-15 in Berlin, Germany!</strong>
             <a href="https://www.openstack.org/summit/berlin-2018/summit-schedule/global-search?t=zuul"
               class="button">Learn More</a>
           </p>
+	  -->
           <header>
             <h2>Stop Merging Broken Code</h2>
           </header>