Remove redundant CustomIntSerializer registration from BasicTestApp

Co-authored-by: javiercn <[email protected]>

Author: Copilot

src/Components/test/testassets/BasicTestApp/Program.cs

@@ -13,7 +13,6 @@
 using Microsoft.AspNetCore.Components.WebAssembly.Services;
 using Microsoft.Extensions.Logging.Configuration;
 using Microsoft.JSInterop;
-using TestContentPackage;
 
 namespace BasicTestApp;
 
@@ -46,9 +45,6 @@ public static async Task Main(string[] args)
         builder.Services.AddScoped<PreserveStateService>();
         builder.Services.AddTransient<FormsTest.ValidationComponentDI.SaladChef>();
 
-        // Register custom serializer for E2E testing of persistent component state serialization extensibility
-        builder.Services.AddSingleton<IPersistentComponentStateSerializer<int>, CustomIntSerializer>();
-
         builder.Services.AddKeyedSingleton("keyed-service-1", TestKeyedService.Create("value-1"));
         builder.Services.AddKeyedSingleton(TestServiceKey.ServiceB, TestKeyedService.Create("value-2"));