Woocommerce remove billing&shipping fields from checkout form

functions.php

// Hook in to Remove Checkout Fields
add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );

function custom_override_checkout_fields( $fields ) {
     unset($fields['billing']['billing_state']);
     unset($fields['billing']['billing_address_2']);
     unset($fields['billing']['billing_city']);
     unset($fields['billing']['billing_postcode']);
     unset($fields['billing']['billing_country']);

     unset($fields['shipping']['shipping_company']);
     unset($fields['shipping']['shipping_state']);
     unset($fields['shipping']['shipping_address_2']);
     unset($fields['shipping']['shipping_city']);
     unset($fields['shipping']['shipping_postcode']);
     unset($fields['shipping']['shipping_country']);

     return $fields;
}