layouts: cleanup doc left menu nav links

Author: zemian

_layouts/docs_page.html

@@ -16,11 +16,7 @@
     <div class="col-xs-6 col-sm-3 sidebar-offcanvas" id="sidebar" role="navigation">
         <ul class="nav">
           <li id="site_mnu_docs_home" class="submenu"><a href="/documentation/">Documentation Home</a></li>
-          <li id="site_mnu_docs_downloads" class="submenu"><a href="/documentation/{{ site.asciidoc_attributes.quartz-version }}/index.html#downloads">Downloads</a></li>
-          <li id="site_mnu_docs_release" class="submenu"><a href="/documentation/{{ site.asciidoc_attributes.quartz-version }}/index.html#release-and-general-information">Release</a></li>
-          <li id="site_mnu_docs_user_guide" class="submenu"><a href="/documentation/{{ site.asciidoc_attributes.quartz-version }}/index.html#users-guide">User’s Guide</a></li>
-          <li id="site_mnu_docs_dev_guide" class="submenu"><a href="/documentation/{{ site.asciidoc_attributes.quartz-version }}/index.html#quartz-developers-guide">Developer’s Guide</a></li>
-          <li id="site_mnu_docs_more_help" class="submenu"><a href="/documentation/{{ site.asciidoc_attributes.quartz-version }}/index.html#more-help">More Help?</a></li>
+          <li id="site_mnu_docs_downloads" class="submenu"><a href="/downloads/">Downloads</a></li>
         </ul>
     </div>