Update quickstart.html

Author: ThomasLandauer

quickstart.html

@@ -163,17 +163,7 @@ <h4>Unit Testing (only)</h4>
               <pre>php vendor/bin/codecept init Unit</pre>
             </div>
 
-            <a class="btn btn-primary" aria-controls="unit-demo" role="button" data-toggle="collapse" href="#unit-demo" aria-expanded="false">
-              See Demo
-            </a>
-
-            <a href="/docs/05-UnitTests" class="btn btn-secondary">Unit Testing Guide &raquo;</a>
-
-            <div class="collapse" id="unit-demo">
-              <div class="panel-collapse-body">
-                <img src="/images/codecept_unit.gif" alt="codeception unit" class="img-responsive">
-              </div>
-            </div>
+            <a href="/docs/UnitTests" class="btn btn-secondary">Unit Testing Guide &raquo;</a>
 
           </div>