replace “add to cart” with buy now

Hey,
I want to completely remove the traditional “Add to cart”, and display ONLY “buy now”.
Will using this, remove your button as well?:
/**
* Main instance of WooCommerce.
*
* Returns the main instance of WC to prevent the need to use globals.
*
* @since 2.1
* @return WooCommerce
*/
function WC() {
remove_action( ‘woocommerce_after_shop_loop_item’, ‘woocommerce_template_loop_add_to_cart’);
remove_action( ‘woocommerce_single_product_summary’, ‘woocommerce_template_single_add_to_cart’);
return WooCommerce::instance();
}