Remove remnants of the Angular implementation (#16026)

src/Umbraco.Web.Common/ActionsResults/UmbracoProblemResult.cs

@@ -1,11 +0,0 @@
-using System.Net;
-using Microsoft.AspNetCore.Mvc;
-
-namespace Umbraco.Cms.Web.Common.ActionsResults;
-
-// TODO: What is the purpose of this? Doesn't seem to add any benefit
-public class UmbracoProblemResult : ObjectResult
-{
-    public UmbracoProblemResult(string message, HttpStatusCode httpStatusCode = HttpStatusCode.InternalServerError)
-        : base(new { Message = message }) => StatusCode = (int)httpStatusCode;
-}

src/Umbraco.Web.Common/ActionsResults/ValidationErrorResult.cs

@@ -1,53 +0,0 @@
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.ModelBinding;
-using Umbraco.Cms.Core.Models;
-using Umbraco.Cms.Core.Models.ContentEditing;
-using Umbraco.Extensions;
-
-namespace Umbraco.Cms.Web.Common.ActionsResults;
-
-// TODO: This should probably follow the same conventions as in aspnet core and use ProblemDetails
-// and ProblemDetails factory. See https://github.com/dotnet/aspnetcore/blob/main/src/Mvc/Mvc.Core/src/ControllerBase.cs#L1977
-// ProblemDetails is explicitly checked for in the application model.
-// In our base class UmbracoAuthorizedApiController the logic is there to create a ProblemDetails.
-// However, to do this will require changing how angular deals with errors since the response will
-// probably be different. Would just be better to follow the aspnet patterns.
-
-/// <summary>
-///     Custom result to return a validation error message with required headers
-/// </summary>
-/// <remarks>
-///     The default status code is a 400 http response
-/// </remarks>
-public class ValidationErrorResult : ObjectResult
-{
-    public ValidationErrorResult(ModelStateDictionary modelState)
-        : this(new SimpleValidationModel(modelState.ToErrorDictionary()))
-    {
-    }
-
-    public ValidationErrorResult(object? value, int statusCode)
-        : base(value) => StatusCode = statusCode;
-
-    public ValidationErrorResult(object? value)
-        : this(value, StatusCodes.Status400BadRequest)
-    {
-    }
-
-    // TODO: Like here, shouldn't we use ProblemDetails?
-    public ValidationErrorResult(string errorMessage, int statusCode)
-        : base(new { Message = errorMessage }) =>
-        StatusCode = statusCode;
-
-    public ValidationErrorResult(string errorMessage)
-        : this(errorMessage, StatusCodes.Status400BadRequest)
-    {
-    }
-
-    public override void OnFormatting(ActionContext context)
-    {
-        base.OnFormatting(context);
-        context.HttpContext.Response.Headers["X-Status-Reason"] = "Validation failed";
-    }
-}