index.xml: Remove the tiles to the tanzu.vmware.com website

[Why]
They are useless on this docs snapshot.

Author: dumbbell

site/index.xml

@@ -60,16 +60,6 @@ limitations under the License.
                 environments, and provides a <a href="./devtools.html">wide range of developer
                 tools for most popular languages</a>.
               </p>
-              <p>
-                See how other people are using RabbitMQ:
-              </p>
-              <br/>
-              <!-- Uberflip Embedded Hub Widget -->
-              <div id="UfEmbeddedHub1501190831892"></div>
-              <script>window._ufHubConfig = window._ufHubConfig || [];window._ufHubConfig.push({'containers':{'app':'#UfEmbeddedHub1501190831892'},'collection':'453624','openLink':function(url){window.open(url);},'lazyloader':{'itemDisplayLimit':3,'maxTilesPerRow':3,'maxItemsTotal':3},'tileSize':'small','enablePageTracking':false,'baseUrl':'https://content.pivotal.io/','filesUrl':'https://content.cdntwrk.com/','generatedAtUTC':'2017-07-27 21:26:47'});</script>
-              <script>(function(d,t,u){function load(){var s=d.createElement(t);s.src=u;d.body.appendChild(s);}if(window.addEventListener){window.addEventListener('load',load,false);}else if(window.attachEvent){window.attachEvent('onload',load);}else{window.onload=load;}}(document,'script','https://content.pivotal.io/hubsFront/embed_collection'));</script>
-              <!-- /End Uberflip Embedded Hub Widget -->
-              <p id='morelinkafterufembed'><a href='https://content.pivotal.io/rabbitmq'>More <span class="arrow"></span></a></p>
             </div>
           </div>
           <div class='column onethird'>