How to Hide Premmerce Permalink Manager for WooCommerce Admin Menus

function plt_hide_woo_permalink_manager_menus() {
	//Hide "Premmerce".
	remove_menu_page('premmerce');
	//Hide "Premmerce → Permalink Manager".
	remove_submenu_page('premmerce', 'premmerce-url-manager-admin');
	//Hide "Premmerce → Contact Us".
	remove_submenu_page('premmerce', 'premmerce-url-manager-admin-contact');
	//Hide "Premmerce → Upgrade".
	remove_submenu_page('premmerce', 'premmerce-url-manager-admin-pricing');
	//Hide "Premmerce → Get premmerce full pack".
	remove_submenu_page('premmerce', 'http://127.0.0.1/wp-admin/plugin-install.php?tab=plugin-information&plugin=premmerce');
}

add_action('admin_menu', 'plt_hide_woo_permalink_manager_menus', 1000000000);

Where do I put this code?