Do you want to remove the order again button from WooCommerce’s checkout page ( Order details section )? Well, here is a code to get rid of that annoying button (link).

/**
* @snippet WooCommerce Remove Order Again Button @ Checkout Page
* @author Sandesh Jangam
* @donate $7 https://www.paypal.me/SandeshJangam/7
*/
remove_action( 'woocommerce_order_details_after_order_table', 'woocommerce_order_again_button' );