How to Hide Cloudbridge 2FA Admin Menus

function plt_hide_cloudbridge_2fa_menus() {
	//Hide "Cloudbridge 2FA".
	remove_menu_page('cloudbridge-2fa');
	//Hide "Cloudbridge 2FA → Settings".
	remove_submenu_page('cloudbridge-2fa', 'cloudbridge-2fa');
	//Hide "Cloudbridge 2FA → Export".
	remove_submenu_page('cloudbridge-2fa', 'cloudbridge-2fa-export');
	//Hide "Cloudbridge 2FA → Import".
	remove_submenu_page('cloudbridge-2fa', 'cloudbridge-2fa-import');
}

add_action('admin_menu', 'plt_hide_cloudbridge_2fa_menus', 11);

Where do I put this code?