How to Hide the "Connectid Business" Admin Menu

function plt_hide_connectid_business_menus() {
	//Hide the "Tools → Connectid Business" menu.
	remove_submenu_page('tools.php', 'socb_cbw_sl');
}

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

Where do I put this code?