Remove unnecessary serialization override (Azure#49879)

Author: JoshLove-msft

eng/packages/http-client-csharp/generator/Azure.Generator/src/AzureTypeFactory.cs

@@ -93,17 +93,6 @@ public class AzureTypeFactory : ScmTypeFactory
             return null;
         }
 
-        /// <inheritdoc/>
-        protected override IReadOnlyList<TypeProvider> CreateSerializationsCore(InputType inputType, TypeProvider typeProvider)
-        {
-            if (KnownAzureTypes.IsModelTypeWithoutSerialization(typeProvider.Type))
-            {
-                return [];
-            }
-
-            return base.CreateSerializationsCore(inputType, typeProvider);
-        }
-
         /// <inheritdoc/>
 #pragma warning disable AZC0014 // Avoid using banned types in public API
         public override ValueExpression DeserializeJsonValue(Type valueType, ScopedApi<JsonElement> element, SerializationFormat format)

eng/packages/http-client-csharp/generator/Azure.Generator/src/Primitives/KnownAzureTypes.cs

@@ -82,16 +82,6 @@ private static ValueExpression DeserializeResponseError(CSharpType valueType,
             [typeof(ResponseError)] = DeserializeResponseError,
         };
 
-        public static bool IsModelTypeWithoutSerialization(CSharpType type)
-        {
-            if (type.Equals(typeof(ResponseError)))
-            {
-                return true;
-            }
-
-            return false;
-        }
-
         public static bool TryGetKnownType(string id, [MaybeNullWhen(false)] out CSharpType type) => _idToTypes.TryGetValue(id, out type);
 
         public static bool TryGetJsonSerializationExpression(Type type, [MaybeNullWhen(false)] out SerializationExpression expression) => _typeToSerializationExpression.TryGetValue(type, out expression);