Hide coupons from customer on Autoship Schedules page

The coupon field can be hidden from customers to view on the Autoship Schedules page in My Account.

To hide the coupon field, simply visit your Wordpress Admin > WooCommerce > Settings > WC Autoship (tab) and unselect the "Enable Coupon Field" option.

Note: This does not prevent a coupon from applying to a scheduled Autoship Order, but does prevent the customer from seeing or changing it.