refactor and remove files.

src/DotNetCore.CAP/Dashboard/GatewayProxy/HostAndPort.cs

-namespace DotNetCore.CAP.Dashboard.GatewayProxy
-{
-    public class HostAndPort
-    {
-        public HostAndPort(string downstreamHost, int downstreamPort)
-        {
-            DownstreamHost = downstreamHost?.Trim('/');
-            DownstreamPort = downstreamPort;
-        }
-
-        public string DownstreamHost { get; private set; }
-        public int DownstreamPort { get; private set; }
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP/Dashboard/GatewayProxy/IRequestScopedDataRepository.HttpData.cs

-using System;
-using System.Collections.Concurrent;
-using Microsoft.AspNetCore.Http;
-
-namespace DotNetCore.CAP.Dashboard.GatewayProxy
-{
-    public class HttpDataRepository : IRequestScopedDataRepository
-    {
-        private readonly IHttpContextAccessor _httpContextAccessor;
-
-        public HttpDataRepository(IHttpContextAccessor httpContextAccessor)
-        {
-            _httpContextAccessor = httpContextAccessor;
-        }
-
-        public void Add<T>(string key, T value)
-        {
-            _httpContextAccessor.HttpContext.Items.Add(key, value);
-        }
-
-        public T Get<T>(string key)
-        {
-            object obj;
-
-            if (_httpContextAccessor.HttpContext.Items.TryGetValue(key, out obj))
-            {
-                return (T)obj;
-            }
-            throw new Exception($"Unable to find data for key: {key}");
-        }
-    }
-
-    public class ScopedDataRepository : IRequestScopedDataRepository
-    {
-        private readonly ConcurrentDictionary<string, object> dictionary = null;
-
-        public ScopedDataRepository()
-        {
-            dictionary = new ConcurrentDictionary<string, object>();
-        }
-
-        public void Add<T>(string key, T value)
-        {
-            dictionary.AddOrUpdate(key, value, (k, v) => value);
-        }
-
-        public T Get<T>(string key)
-        {
-            if (dictionary.TryGetValue(key, out object t))
-            {
-                return (T)t;
-            }
-            throw new Exception($"Unable to find data for key: {key}");
-        }
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP/Dashboard/GatewayProxy/IRequestScopedDataRepository.cs

-namespace DotNetCore.CAP.Dashboard.GatewayProxy
-{
-    public interface IRequestScopedDataRepository
-    {
-        void Add<T>(string key, T value);
-
-        T Get<T>(string key);
-    }
-}
\ No newline at end of file