Checkout Page Form's Unncessary Fields Unsetting

//Custom billing fields
function fashionaloy_billing_fields ($fields = array()  ) {

    unset( $fields['billing_city'] );
    unset( $fields['billing_postcode'] );
    unset( $fields['billing_state'] );
    unset( $fields['billing_country'] );

    return $fields;
}
add_filter('woocommerce_billing_fields', 'fashionaloy_billing_fields');

//Custom billing fields
function fashionaloy_shipping_fields ($fields = array()  ) {

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

    return $fields;
}

add_filter('woocommerce_shipping_fields', 'fashionaloy_shipping_fields');