Remove unused serializer code

StabilityMatrix.Avalonia/App.axaml.cs

@@ -233,9 +233,6 @@ public sealed class App : Application
         var services = ConfigureServices();
         Services = services.BuildServiceProvider();
 
-        // Configure json serializers
-        ViewModelSerializer.SetServiceProvider(Services);
-
         var settingsManager = Services.GetRequiredService<ISettingsManager>();
 
         if (settingsManager.TryFindLibrary())

StabilityMatrix.Avalonia/Helpers/ViewModelSerializer.cs

@@ -3,48 +3,12 @@ using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Linq;
 using System.Reflection;
-using System.Text.Json.Nodes;
 using System.Text.Json.Serialization;
-using Newtonsoft.Json;
-using StabilityMatrix.Avalonia.Converters.Json;
-using JsonException = System.Text.Json.JsonException;
 
 namespace StabilityMatrix.Avalonia.Helpers;
 
 public static class ViewModelSerializer
 {
-    public static JsonSerializerSettings SerializeSettings { get; } =
-        new()
-        {
-            Formatting = Formatting.Indented,
-            TypeNameHandling = TypeNameHandling.Arrays,
-            NullValueHandling = NullValueHandling.Ignore
-        };
-
-    public static JsonSerializerSettings DeserializeSettings { get; } =
-        new() { TypeNameHandling = TypeNameHandling.Arrays };
-
-    public static void SetServiceProvider(IServiceProvider serviceProvider)
-    {
-        SerializeSettings.ContractResolver = new ServiceProviderContractResolver(serviceProvider);
-        DeserializeSettings.ContractResolver = new ServiceProviderContractResolver(serviceProvider);
-    }
-
-    public static JsonObject SerializeToJsonObject<T>(T target)
-    {
-        var result = JsonConvert.SerializeObject(target, SerializeSettings);
-        return JsonNode.Parse(result)?.AsObject() ?? throw new JsonException();
-    }
-
-    public static T? DeserializeJsonObject<T>(JsonObject jsonObject)
-    {
-        var result = JsonConvert.DeserializeObject<T>(
-            jsonObject.ToJsonString(),
-            DeserializeSettings
-        );
-        return result;
-    }
-
     public static IImmutableDictionary<string, Type> GetDerivedTypes(Type baseType)
     {
         return GetJsonDerivedTypeAttributes(baseType)