Update UI help page with only one nav-link example

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/help/ui.html.haml

@@ -147,23 +147,6 @@
       %li
         %a Closed
-  %h4
-    %code .btn-group.btn-group-next
-  .example
-    %div.btn-group.btn-group-next
-      %a.btn.active Open
-      %a.btn Closed
-
-
-  %h4
-    %code .nav.nav-tabs
-  .example
-    %ul.nav.nav-tabs
-      %li.active
-        %a Open
-      %li
-        %a Closed
-
   %h2#buttons Buttons