wptom

Try this:

// woocommerce remove checkout form fields
add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );
function custom_override_checkout_fields( $fields ) {
     unset($fields['billing']['billing_country']);
     unset($fields['billing']['billing_company']);
     unset($fields['billing']['billing_address_1']);
     unset($fields['billing']['billing_address_2']);
     unset($fields['billing']['billing_postcode']);
     unset($fields['billing']['billing_city']);

     return $fields;
}