index.html: remove an old entry in the menu

Closes #2840.

browser/index.html

@@ -181,11 +181,6 @@
                             <span id="top_label"></span></br>
                             <input id="top_slider" type="range" min="5" max="100" step="5" value="10" onchange="m.displayTop(this.value)" />
                         </div>
-                        <div class="menu_box">
-                            tag visibility</br>
-                            <ul id="tagList">
-                            </ul>
-                        </div>
                     </div></div>
                 </div>