code: public static com.liferay.commerce.discount.model.CommerceDiscountUserSegmentRel deleteCommerceDiscountUserSegmentRel(
  		long commerceDiscountUserSegmentRelId)
  		throws com.liferay.portal.kernel.exception.PortalException {
  		return getService()
  				   .deleteCommerceDiscountUserSegmentRel(commerceDiscountUserSegmentRelId);
  	}
docs: Deletes the commerce discount user segment rel with the primary key from the database. Also notifies the appropriate model listeners.
  
  @param commerceDiscountUserSegmentRelId the primary key of the commerce discount user segment rel
  @return the commerce discount user segment rel that was removed
  @throws PortalException if a commerce discount user segment rel with the primary key could not be found