code: @Override
  	public void removeByG_C(long groupId, String couponCode) {
  		for (CommerceDiscount commerceDiscount : findByG_C(groupId, couponCode,
  				QueryUtil.ALL_POS, QueryUtil.ALL_POS, null)) {
  			remove(commerceDiscount);
  		}
  	}
docs: Removes all the commerce discounts where groupId = &#63; and couponCode = &#63; from the database.
  
  @param groupId the group ID
  @param couponCode the coupon code