feat(YALB-1385): hide admin-tools list item (#435)

On mobile, the Yale logo present in the admin-tools section of the menu
has no text associated, making it look strange.  This hides that list
item all together so that it only shows when the vertical menus are not
visible.

web/profiles/custom/yalesites_profile/modules/custom/ys_toolbar/css/ys_toolbar.theme.css

@@ -4,6 +4,11 @@
   mask-image: url('../images/yale-university-press-1985-2010.svg') !important;
 }
 
+/* Hide yalesiites tools help menu as it has no text associated */
+.toolbar .toolbar-bar #toolbar-item-administration-tray.toolbar-tray-vertical ul.toolbar-menu.root li.menu-item.menu-item--expanded.menu-item__admin_toolbar_tools-help.level-1 {
+  display: none;
+}
+
 .gin--horizontal-toolbar #toolbar-administration .toolbar-icon-admin-toolbar-tools-help::before {
   width: 28px !important;
 }