How to Hide WooCommerce PDF Invoice Builder Admin Menus

function plt_hide_woo_pdf_invoice_builder_menus() {
	//Hide "WC Invoice".
	remove_menu_page('wc_invoice_menu');
	//Hide "WC Invoice → WC Invoice".
	remove_submenu_page('wc_invoice_menu', 'wc_invoice_menu');
	//Hide "WC Invoice → Manage Invoices".
	remove_submenu_page('wc_invoice_menu', 'woo-pdf-invoice-builder/woocommerce-pdf-invoice.phpmanage_invoices');
	//Hide "WC Invoice → Documentation/Help".
	remove_submenu_page('wc_invoice_menu', 'woo-pdf-invoice-builder/woocommerce-pdf-invoice.phpwish_list');
	//Hide "WC Invoice → Blank page/500 error resolver".
	remove_submenu_page('wc_invoice_menu', 'woo-pdf-invoice-builder/woocommerce-pdf-invoice.phperrorresolver');
	//Hide "WC Invoice → Our WC Plugins".
	remove_submenu_page('wc_invoice_menu', 'woo-pdf-invoice-builder/woocommerce-pdf-invoice.phpour_plugins');
}

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

Where do I put this code?