show-select-allow-backorder.php

<?php
/**
 * Plugin Name: Show Allow backorder radio buttons
 * Version: 0.1
 * 
 */

function show_allow_backorder_radio( $options ) {
	return false;
}

add_action( 'woocommerce_product_allow_backorder_use_radio', 'show_allow_backorder_radio' );