code: public static CommerceDiscount remove(long commerceDiscountId)
  		throws com.liferay.commerce.discount.exception.NoSuchDiscountException {
  		return getPersistence().remove(commerceDiscountId);
  	}
docs: Removes the commerce discount with the primary key from the database. Also notifies the appropriate model listeners.
  
  @param commerceDiscountId the primary key of the commerce discount
  @return the commerce discount that was removed
  @throws NoSuchDiscountException if a commerce discount with the primary key could not be found