remove redundant references

aspnet-core/services/apigateway/LINGYUN.ApiGateway.Host/Controllers/ApiGatewayController.cs

@@ -1,7 +1,6 @@
 using LINGYUN.ApiGateway.Utils;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.DependencyInjection;
-using Ocelot.LoadBalancer.LoadBalancers;
 using Ocelot.Multiplexer;
 using System;
 using System.Linq;

aspnet-core/services/apigateway/LINGYUN.ApiGateway.Host/Utils/ILoadBalancerFinder.cs

@@ -1,5 +1,4 @@
-using Microsoft.Extensions.Localization;
+using System.Collections.Generic;
-using System.Collections.Generic;
 using System.Threading.Tasks;
 
 namespace LINGYUN.ApiGateway.Utils