demo(*): remove a dead link

Author: pkozlowski-opensource

index.html

@@ -36,7 +36,6 @@
           <li><a href="http://angular-ui.github.io/ng-grid/">Grid</a></li>
           <li><a href="https://github.com/angular-ui/AngularJs.tmbundle">AngularJS.tmbundle</a></li>
           <li><a href="https://github.com/angular-ui/ui-router">Router <span class="label label-success">New!</span></a></li>
-          <li><a href="http://angular-ui.github.io/Tips-n-Tricks/">Tips-n-Tricks <span class="label">WIP</span></a></li>
         </ul>
       </div>
       <div class="nav-collapse">