Removed registration of default serialization and deserialization classes

src/kiota/Handlers/Client/GenerateHandler.cs

@@ -53,7 +53,6 @@ internal class GenerateHandler : BaseKiotaCommandHandler
                     var generationConfiguration = new GenerationConfiguration();
                     var requests = !refresh && manifest is not null && manifest.ApiDependencies.TryGetValue(clientEntry.Key, out var value) ? value.Requests : [];
                     clientEntry.Value.UpdateGenerationConfigurationFromApiClientConfiguration(generationConfiguration, clientEntry.Key, requests);
-                    DefaultSerializersAndDeserializers(generationConfiguration);
                     generationConfiguration.ClearCache = refresh;
                     generationConfiguration.CleanOutput = refresh;
                     generationConfiguration.Operation = ConsumerOperation.Generate;