function plt_hide_language_switcher_menus() {
//Hide the "Languages" menu.
remove_menu_page('lsw_plugin_panel');
//Hide the "Languages → Settings" menu.
remove_submenu_page('lsw_plugin_panel', 'language-switcher');
}
add_action('admin_menu', 'plt_hide_language_switcher_menus', 11);