app: remove nav item disable matching

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/app/src/extensions/AppNav.tsx

@@ -188,14 +188,6 @@ function NavContentRenderer(props: {
         return [];
       }
 
-      // TODO: Nav items are deprecated, and this code covers for a documented ability to use nav items still in config to disable pages in the sidebar.
-      // Remove this code once nav items are completely gone from the codebase.
-      const navItemNodeId = node.spec.id.replace(/^page:/, 'nav-item:');
-      const navItemNode = tree.nodes.get(navItemNodeId);
-      if (navItemNode?.spec.disabled) {
-        return [];
-      }
-
       const routeRef = node.instance.getData(coreExtensionData.routeRef);
       if (!routeRef) {
         return [];