cleanup: 删除 PricingController 中无人使用的 Structure_DZ 死 Action 及 StructureImport 润和死分支

依据 outputs/zszq-trs-pricing-structure-dz-死代码分析报告.md 第一轮零风险清理。
国联分支下 Is润和 恒为 false，Structure_DZ 无任何菜单/代码入口。
单独 revert 本 commit 即可整体找回。

YLErpWeb/Controllers/PricingController.cs

@@ -85,54 +85,6 @@ namespace YLErp.Web.Controllers
             return View(model);
         }
 
-        /// <summary>
-        /// 组合报价
-        /// </summary>
-        [MyAuthorize("报价管理-结构化交易定价")]
-        public ActionResult Structure_DZ()
-        {
-            var otcTrade = new OtcOptionTradeFull()
-            {
-                TraderId = CurUser.UserId,
-                TraderName = CurUser.UserName,
-                BuySell = "卖出",
-                VolType = "交易",
-                TradeType = "香草期权",
-                OptionType = "看涨",
-                ExerciseMode = "European",
-                TradeDate = valuedateBLL.ValueDate,
-                UnderlyingInstrumentType = AppHelper.OtcConfig.StockFirst ? "Stock" : "CommodityFutures",
-                SettlementType = (int)SettlementTypeEnum.ClosePrice,
-                NoRiskRate = valuedateBLL.SystemDate.RiskFreeRate / 100,
-                ParticipationRate = 1,
-                AnnualizeFactor = 1,
-                MarginTemplateName = "系统默认",
-                CouponIncludeStartDate = false,
-                CouponUsePaymentDate = false
-            };
-
-            var model = new Models.PricingModel(CurUser, UserBLL.IsTradeOfCurrentLogin(CurUser.UserId)) { Trade = otcTrade };
-
-            if (model.NumOfSmoothingDaysCfg == "ONE")
-            {
-                model.Trade.NumOfSmoothingDays = 1;
-            }
-            //获取自定义结构信息
-            var structureTypes =
-                new StructureService(CurUser)
-                .QueryStructureMap(StructureRangeEnum.BALCK_TRADE);
-            var structureTypeMap = new Dictionary<string, List<Structure_Details>>() {
-                { "气囊结构",new List<Structure_Details>() }
-            };
-            foreach (var item in structureTypes)
-            {
-                structureTypeMap[item.Key] = item.Value;
-            }
-            ViewBag.StructureTypeMap = structureTypeMap;
-
-            return View(model);
-        }
-
         /// <summary>
         /// 组合报价导入
         /// </summary>
@@ -198,11 +150,6 @@ namespace YLErp.Web.Controllers
                 ViewBag.ExtendInfoMap[item.Key] = item.Value;
             }
 
-            if (PS.Config.Is润和)
-            {
-                return View(nameof(Structure_DZ), model);
-            }
-
             return View(nameof(Structure), model);
         }