Unsetting WooCommerce Session Variables

gistfile1.txt

<?php

/**
 * In answer to https://twitter.com/Kathy_Darling/status/805902856536674304
 * 
 * Anyone know how to remove a @WooCommerce session variable once you've set it?
 *
 */

// One can set the variable to null, like it is done with wc_notices:

WC()->session->set( 'wc_notices', null );

// Or really unset is as in

WC()->session->__unset( 'wc_notices' );

// source: https://github.com/woocommerce/woocommerce/blob/release/2.6/includes/abstracts/abstract-wc-session.php#L57