Remove item from Dashboard menu

WordPress Admin Area Customization

You can use this snippet to remove the item from WordPress admin dashboard…just replace file URL to match your case:

function remove_acf_menu() {
        remove_menu_page('edit.php?post_type=acf');
    }
    add_action( 'admin_menu', 'remove_acf_menu', 999);

You should add this code to your theme functions.php file.