Remove type :)

src/EditorFeatures/Test/CodeGeneration/CodeGenerationTests.CSharp.cs

@@ -957,41 +957,6 @@ public async Task AddIndexer2()
                     });
             }
 
-            internal class TestOptionSet : OptionSet
-            {
-                private readonly IDictionary<OptionKey2, object> _values;
-
-                public TestOptionSet(Dictionary<OptionKey2, object> values)
-                {
-                    _values = values;
-                }
-
-                private protected override object GetOptionCore(OptionKey optionKey)
-                {
-                    Contract.ThrowIfFalse(_values.TryGetValue(
-                        new OptionKey2((IOption2)optionKey.Option, optionKey.Language), out var value));
-
-                    return value;
-                }
-
-                public override OptionSet WithChangedOption(OptionKey optionAndLanguage, object value)
-                {
-                    throw new NotImplementedException();
-                }
-
-                internal override IEnumerable<OptionKey> GetChangedOptions(OptionSet optionSet)
-                {
-                    foreach (var kvp in _values)
-                    {
-                        var currentValue = optionSet.GetOption(kvp.Key);
-                        if (!object.Equals(currentValue, kvp.Value))
-                        {
-                            yield return new OptionKey(kvp.Key.Option, kvp.Key.Language);
-                        }
-                    }
-                }
-            }
-
             [Fact, Trait(Traits.Feature, Traits.Features.CodeGeneration)]
             public async Task AddParameterfulProperty()
             {