How to Hide ARI Adminer Admin Menus

function plt_hide_ari_adminer_menus() {
	//Hide "ARI Adminer".
	remove_menu_page('ari-adminer');
	//Hide "ARI Adminer → Run Adminer".
	remove_submenu_page('ari-adminer', 'ari-adminer-run-adminer');
	//Hide "ARI Adminer → Connections".
	remove_submenu_page('ari-adminer', 'ari-adminer-connections');
	//Hide "ARI Adminer → Settings".
	remove_submenu_page('ari-adminer', 'ari-adminer-settings');
}

add_action('admin_menu', 'plt_hide_ari_adminer_menus', 11);

Where do I put this code?