Remove TOC hide/show feature

It's only used on narrow screens, since we now show TOC on the side
on wide screens. It's also is half-broken and has been for at least
several months and no one noticed, so I doubt the feature is in
high demand.

By removing it we can get rid of Cookies jquery plugin and the associated
notice about our site using cookies.

.oO( mmm.... coookies )

Author: zoffixznet

html/js/jquery.cookie.js

@@ -1,7 +1,6 @@
 $(function(){
     setup_search_box();
     setup_auto_title_anchors();
-    setup_collapsible_TOC();
     setup_debug_mode();
     $(window).resize(setup_search_box);
 });
@@ -28,44 +27,6 @@ function setup_auto_title_anchors() {
     });
 }
 
-function setup_collapsible_TOC() {
-    var state;
-    if ( ! $('nav.indexgroup') ) { return; }
-
-    // fix for jumpy .slideDown() effect
-    $('nav.indexgroup > ol').each( function(){
-        $(this).css( 'height', $(this).height() );
-    });
-
-    state = Cookies.get('toc_state') || 'shown';
-    if ( state == 'hidden' ) {
-        $('nav.indexgroup > ol').hide();
-    }
-
-    $('nav.indexgroup').find('#TOC_Title')
-        .append(
-            '<a id="TOC_toggle_button" href="#">['
-            + ( state == 'hidden' ? 'show' : 'hide')
-            + ']</a></h2>'
-        )
-        .find('#TOC_toggle_button')
-            .click(function() {
-                var el = $(this);
-                if (el.text() == '[hide]') {
-                    Cookies.set('toc_state', 'hidden');
-                    el.parents('nav').find('tbody').hide();
-                    el.text('[show]');
-                }
-                else {
-                    Cookies.set('toc_state', 'shown');
-                    el.parents('nav').find('tbody').show();
-                    el.text('[hide]');
-                }
-
-                return false;
-            });
-}
-
 document.addEventListener("keyup", function(evt){
     if(evt.key == "Escape"){$('#query').focus()}
 });

html/js/main.js

@@ -13,18 +13,10 @@
       <!--External Link Image by Zapyon, CCA-SA 4.0. Derived from Wikimedia Foundation https://commons.wikimedia.org/wiki/File:External-link-04-bold-12x12.svg -->
 
   </p>
-  <p>
-    <small>
-      This site uses HTTP Cookies to save your browsing preferences. If that's
-      an issue, please <a href="https://www.google.com/search?q=block+website+from+using+cookie">
-      configure your browser to block them</a>.
-    </small>
-  </p>
 </footer>
 
 <script type="text/javascript" src="/js/jquery-3.1.1.min.js?v=1"></script>
 <script type="text/javascript" src="/js/jquery-ui.min.js?v=1"></script>
 <script type="text/javascript" src="/js/sift4-common.js?v=1"></script>
 <script type="text/javascript" src="/js/search.js?v=2"></script>
-<script type="text/javascript" src="/js/jquery.cookie.js?v=1"></script>
-<script type="text/javascript" src="/js/main.js?v=1"></script>
+<script type="text/javascript" src="/js/main.js?v=2"></script>