Fixing up location of comment and removing an unused local.

src/Diagnostics/FxCop/System.Runtime.Analyzers/CSharp/Design/OverrideMethodsOnComparableTypes.Fixer.cs

-using System.Collections.Generic;
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+using System.Collections.Generic;
 using System.Composition;
 using System.Diagnostics;
-// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
-
 using System.Linq;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CodeFixes;

src/Diagnostics/FxCop/System.Runtime.Analyzers/Core/Design/OverrideMethodsOnComparableTypes.Fixer.cs

@@ -51,8 +51,6 @@ private async Task<Document> ImplementComparable(Document document, SyntaxNode d
             DocumentEditor editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
             var generator = editor.Generator;
 
-            var throwStatement = generator.ThrowStatement(generator.ObjectCreationExpression(generator.DottedName("System.NotImplementedException")));
-
             if (!OverrideMethodsOnComparableTypesAnalyzer.DoesOverrideEquals(typeSymbol))
             {
                 var equalsMethod = generator.MethodDeclaration(WellKnownMemberNames.ObjectEquals,