Hide the Discount Code Field at EDD Checkout

Removes the "Have a discount code?" link from the Easy Digital Downloads checkout, so customers without a code do not leave to hunt for one.

Code

add_action( 'init', function () {
    remove_action( 'edd_checkout_form_top', 'edd_discount_field', -1 );
}, 20 );

For the shortcode-based checkout; discount links (?discount=CODE) still apply codes automatically.

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