clean up RemoteAuthService

Foxnouns.Backend/Services/Auth/RemoteAuthService.Tumblr.cs

@@ -14,6 +14,8 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 using System.Text.Json.Serialization;
 
+// ReSharper disable ClassNeverInstantiated.Local
+
 namespace Foxnouns.Backend.Services.Auth;
 
 public partial class RemoteAuthService
@@ -83,11 +85,6 @@ public partial class RemoteAuthService
         return new RemoteUser(blog.Uuid, blog.Name);
     }
 
-    private record OauthTokenResponse(
-        [property: JsonPropertyName("access_token")] string AccessToken,
-        [property: JsonPropertyName("token_type")] string TokenType
-    );
-
     // tumblr why
     private record TumblrData(
         [property: JsonPropertyName("meta")] TumblrMeta Meta,