fixed warnings

SchengenVisaApi/BlazorWebAssemblyVisaApiClient/Pages/Auth.razor

@@ -14,7 +14,7 @@
 @code
 {
     private AuthData loginData = new();
-    private string loginResult = String.Empty;
+    private string loginResult = string.Empty;
 
     [Inject]
     private Client Client { get; set; } = null!;

SchengenVisaApi/Infrastructure/Auth/ServiceCollectionExtensions.cs

@@ -1,6 +1,5 @@
 using System.IdentityModel.Tokens.Jwt;
 using ApplicationLayer.InfrastructureServicesInterfaces;
-using ApplicationLayer.Services.AuthServices.NeededServices;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace Infrastructure.Auth;

SchengenVisaApi/Infrastructure/Auth/TokenGenerator.cs

@@ -2,7 +2,6 @@
 using System.Security.Claims;
 using ApplicationLayer.InfrastructureServicesInterfaces;
 using ApplicationLayer.Services.AuthServices.Common;
-using ApplicationLayer.Services.AuthServices.NeededServices;
 using Domains.Users;
 
 namespace Infrastructure.Auth;