Fix compatibility with Craft 5.9+ and new layout changes

Author: engram-design

src/templates/_layouts/navs.html

@@ -114,7 +114,6 @@
 
                         {% set itemAttributes = {
                             id: item.getId(),
-                            class: 'nav-item nav-item--sub',
                             'data-type': item.type,
                         } %}