How to Hide Ajax Search Lite Admin Menus

function plt_hide_ajax_search_lite_menus() {
	//Hide "Ajax Search Lite".
	remove_menu_page('asl_settings');
	//Hide "Ajax Search Lite → Ajax Search Lite".
	remove_submenu_page('asl_settings', 'asl_settings');
	//Hide "Ajax Search Lite → Analytics Integration".
	remove_submenu_page('asl_settings', 'asl_analytics');
	//Hide "Ajax Search Lite → Compatibility Settings".
	remove_submenu_page('asl_settings', 'asl_compatibility');
	//Hide "Ajax Search Lite → Performance options".
	remove_submenu_page('asl_settings', 'asl_performance_options');
	//Hide "Ajax Search Lite → Maintenance".
	remove_submenu_page('asl_settings', 'asl_maintenance');
	//Hide "Ajax Search Lite → Help & Support".
	remove_submenu_page('asl_settings', 'asl_help_and_support');
	//Hide "Ajax Search Lite → Go PRO".
	remove_submenu_page('asl_settings', 'asl_go_pro');
}

add_action('admin_menu', 'plt_hide_ajax_search_lite_menus', 11);
Where do I put this code?