/**
* Remove given VAT charging rule.
*/
static function removeVatRule($id)
{
$db = eZDB::instance();
$db->begin();
// Remove product categories associated with the rule.
eZVatRule::removeProductCategories($id);
// Remove the rule itself.
eZPersistentObject::removeObject(eZVatRule::definition(), array("id" => $id));
$db->commit();
}