code: @Indexable(type = IndexableType.DELETE)
  	@Override
  	public CommerceDiscountRule deleteCommerceDiscountRule(
  		CommerceDiscountRule commerceDiscountRule) throws PortalException {
  		return commerceDiscountRulePersistence.remove(commerceDiscountRule);
  	}
docs: Deletes the commerce discount rule from the database. Also notifies the appropriate model listeners.
  
  @param commerceDiscountRule the commerce discount rule
  @return the commerce discount rule that was removed
  @throws PortalException