refactor: remove default produce 200 code

Endpoint/Controllers/V1/CampusController.cs

@@ -1,6 +1,5 @@
 using Asp.Versioning;
 using MediatR;
-using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Mirea.Api.DataAccess.Application.Cqrs.Campus.Queries.GetCampusBasicInfoList;
 using Mirea.Api.DataAccess.Application.Cqrs.Campus.Queries.GetCampusDetails;
@@ -21,7 +20,6 @@ public class CampusController(IMediator mediator) : BaseController
     /// </summary>
     /// <returns>Basic information about campuses.</returns>
     [HttpGet]
-    [ProducesResponseType(StatusCodes.Status200OK)]
     public async Task<ActionResult<List<CampusBasicInfoResponse>>> Get()
     {
         var result = await mediator.Send(new GetCampusBasicInfoListQuery());
@@ -42,7 +40,6 @@ public class CampusController(IMediator mediator) : BaseController
     /// <param name="id">Campus ID.</param>
     /// <returns>Details of the specified campus.</returns>
     [HttpGet("{id:int}")]
-    [ProducesResponseType(StatusCodes.Status200OK)]
     [BadRequestResponse]
     [NotFoundResponse]
     public async Task<ActionResult<CampusDetailsResponse>> GetDetails(int id)