function plt_hide_aria_accessibility_toolkit_menus() {
//Hide the "Web Accessibility" menu.
remove_menu_page('ariaat');
//Hide the "Settings → Web Accessibility" menu.
remove_submenu_page('options-general.php', 'ariaat-legacy');
}
add_action('admin_menu', 'plt_hide_aria_accessibility_toolkit_menus', 11);