function plt_hide_wpxon_ajax_contact_form_menus() {
//Hide the "Ajax Contact Form" menu.
remove_menu_page('wpxon_acf');
//Hide the "Ajax Contact Form → Ajax Contact Form" menu.
remove_submenu_page('wpxon_acf', 'wpxon_acf');
//Hide the "Ajax Contact Form → Settings" menu.
remove_submenu_page('wpxon_acf', 'wpxon_acfs');
}
add_action('admin_menu', 'plt_hide_wpxon_ajax_contact_form_menus', 11);