Unhook GBS form element in child theme

/**
 * Unhook regsitration_form_addons from parent theme on init. Hooking to init because register_form has already been hooked-in
 *
 * @author Dan Cameron
 */
add_action('init', 'unhook_registration_form_addons');
function unhook_registration_form_addons()
{
	remove_action( 'register_form', 'registration_form_addons' );
}
/**
 * Add a new registration form element.
 *
 * @author Dan Cameron
 */
add_action( 'register_form', 'registration_form_addons_new' );
function registration_form_addons_new()
{
?>
	<span class="check clearfix">
		<input type="checkbox" name="gbs_profile[group-buying-opt-in]" value="TRUE" checked="checked"> <?php _e('Subscribe to our deals.', 'groupbuyingtheme'); ?>
	</span>
<?php
}