WooCommerce Edit Checkout Billing Address fields

<?php /**
* @Title: WooCommerce Edit Checkout Billing Address fields
*/
add_filter( 'woocommerce_checkout_fields' , 'dfh_woo_mod_woo_billing_address_fields' );
 
function dfh_woo_mod_woo_billing_address_fields( $fields ) {

    // Remove Billing Company Field    
    unset($fields['billing']['billing_company']);

    // Rename Label of for Order Comments
    $fields['order']['order_comments']['label'] = 'Personalized Message';

    // Change Placeholder text of Order Comments
     $fields['order']['order_comments']['placeholder'] = 'Add message here';

    // Make postcode non-required fieid
     $fields['billing']["billing_postcode"]['required'] = false;
     
    // Remove Billing Address 2 field
    unset($fields['billing']['billing_address_2']);

    return $fields;
}