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