Deleted Code still working/affecting

Hi,

I created a code for hide some fields in the checkout of woocommerce. It works ok, but now I need to show these fields and although I have change the code, desactivated de code and even deteled, the fields didn’t show up.

This is the code:

add_filter( ‘woocommerce_checkout_fields’ , ‘ayudawp_pago_virtual_simple’ );
function ayudawp_pago_virtual_simple( $fields ) {

$only_virtual = true;

foreach( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
// Comprobamos si hay productos que no sean virtuales
if ( ! $cart_item[‘data’]->is_virtual() ) $only_virtual = false;
}

if( $only_virtual ) {
unset($fields[‘billing’][‘billing_first_name’]);
unset($fields[‘billing’][‘billing_last_name’]);
unset($fields[‘billing’][‘billing_company’]);
unset($fields[‘billing’][‘billing_address_1’]);
unset($fields[‘billing’][‘billing_address_2’]);
unset($fields[‘billing’][‘billing_city’]);
unset($fields[‘billing’][‘billing_postcode’]);
unset($fields[‘billing’][‘billing_phone’]);
unset($fields[‘billing’][‘billing_nif’]);
add_filter( ‘woocommerce_enable_order_notes_field’, ‘__return_false’ );
}

return $fields;
}`

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