How to Hide CodePile Admin Menus

function plt_hide_codepile_menus() {
	//Hide "CodePile".
	remove_menu_page('codepile');
	//Hide "CodePile → CodePile".
	remove_submenu_page('codepile', 'codepile');
	//Hide "CodePile → Free Features".
	remove_submenu_page('codepile', 'crb_carbon_fields_container_codepile-free-features.php');
	//Hide "CodePile → Contact Us".
	remove_submenu_page('codepile', 'codepile-contact');
	//Hide "CodePile → Support Forum".
	remove_submenu_page('codepile', 'codepile-wp-support-forum');
	//Hide "CodePile → Upgrade".
	remove_submenu_page('codepile', 'codepile-pricing');
}

add_action('admin_menu', 'plt_hide_codepile_menus', 1000000000);
Where do I put this code?