code: public static com.liferay.commerce.discount.model.CommerceDiscount deleteCommerceDiscount(
  		com.liferay.commerce.discount.model.CommerceDiscount commerceDiscount)
  		throws com.liferay.portal.kernel.exception.PortalException {
  		return getService().deleteCommerceDiscount(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