Fix build

Author: HaoK

src/SignalR/server/Core/src/Internal/DefaultHubDispatcher.cs

@@ -9,7 +9,6 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Internal;
-using Microsoft.AspNetCore.Routing;
 using Microsoft.AspNetCore.SignalR.Protocol;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Internal;

src/SignalR/server/Core/src/Internal/HubMethodDescriptor.cs

@@ -118,8 +118,6 @@ public HubMethodDescriptor(ObjectMethodExecutor methodExecutor, IServiceProvider
 
     public IList<IAuthorizeData> AuthorizeData { get; }
 
-    public IReadOnlyList<AuthorizationPolicy> EndpointPolicies { get; }
-
     public bool HasSyntheticArguments { get; private set; }
 
     public bool IsServiceArgument(int argumentIndex)