fix(账单): 已出账单费用为0时，无法结算的问题

service/settle_account_bill/settle_account_bill.go

@@ -89,7 +89,7 @@ func (s Service)  List(req model.ListReq, user request.UserInfo) ([]accountModel
 
 // 结算
 func (s Service) Settle(req accountModel.AccountBillSettleReq, user request.UserInfo) error {
-	if req.BillId == 0 || req.Amount == 0 {
+	if req.BillId == 0 {
 		return errors.New("参数缺失")
 	}