Remove campos invalidos no checkout do woocommerce. Útil quando se utiliza o plugin extra checkout fields for Brazil

functions.php

//Remove os campos invalidos do checkout
add_action('wp_footer', 'fixInvalidCheckoutFields', 999);
function fixInvalidCheckoutFields() {
	if(is_checkout()){
	?>
	<script>
		jQuery(window).load(function(){
			jQuery('.form-row').removeClass('woocommerce-invalid woocommerce-invalid-required-field woocommerce-validated');
		})
	</script>	
	<?php
	}
}