Remove unneeded AuthenticateContext

src/Microsoft.AspNetCore.Authentication.Abstractions/AuthenticateContext.cs

@@ -1,21 +0,0 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using Microsoft.AspNetCore.Http;
-
-namespace Microsoft.AspNetCore.Authentication
-{
-    /// <summary>
-    /// Base class used by <see cref="IAuthenticationHandler"/> methods.
-    /// </summary>
-    public class AuthenticateContext : BaseAuthenticationContext
-    {
-        /// <summary>
-        /// Constructor.
-        /// </summary>
-        /// <param name="context">The <see cref="HttpContext"/> context.</param>
-        /// <param name="authenticationScheme">The name of the authentication scheme.</param>
-        public AuthenticateContext(HttpContext context, string authenticationScheme) : base(context, authenticationScheme, properties: null)
-        { }
-    }
-}

src/Microsoft.AspNetCore.Authentication.Abstractions/IAuthenticationHandler.cs

@@ -22,9 +22,8 @@ namespace Microsoft.AspNetCore.Authentication
         /// <summary>
         /// Authentication behavior.
         /// </summary>
-        /// <param name="context">The <see cref="AuthenticateContext"/> context.</param>
         /// <returns>The <see cref="AuthenticateResult"/> result.</returns>
-        Task<AuthenticateResult> AuthenticateAsync(AuthenticateContext context);
+        Task<AuthenticateResult> AuthenticateAsync();
 
         /// <summary>
         /// Challenge behavior.

src/Microsoft.AspNetCore.Authentication.Core/AuthenticationService.cs

@@ -65,8 +65,7 @@ namespace Microsoft.AspNetCore.Authentication
                 throw new InvalidOperationException($"No authentication handler is configured to authenticate for the scheme: {scheme}");
             }
 
-            var authContext = new AuthenticateContext(context, scheme);
+            var result = await handler.AuthenticateAsync();
-            var result = await handler.AuthenticateAsync(authContext);
             if (result.Succeeded)
             {
                 var transformed = await Transform.TransformAsync(result.Principal);