message: [SwiftExpressionParser] Simplify by removing dead code.
diff: @@ -843,27 +843,6 @@ static void ResolveSpecialNames(
  }
  }
  -//----------------------------------------------------------------------
  -/// Diagnostics are part of the SwiftASTContext and we must enable and
  -/// disable colorization manually in the SwiftASTContext. We need to
  -/// ensure that if we modify the setting that we restore it to what it
  -/// was. This class helps us to do that without having to intrument
  -/// all returns from a function, like in
  -/// SwiftExpressionParser::Parse(...).
  -/// //----------------------------------------------------------------------
  -class SetColorize {
  -public:
  - SetColorize(SwiftASTContext *swift_ast, bool colorize)
  - : m_swift_ast(swift_ast),
  - m_saved_colorize(swift_ast->SetColorizeDiagnostics(colorize)) {}
  -
  - ~SetColorize() { m_swift_ast->SetColorizeDiagnostics(m_saved_colorize); }
  -
  -protected:
  - SwiftASTContext *m_swift_ast;
  - const bool m_saved_colorize;
  -};
  -
  /// Initialize the SwiftASTContext and return the wrapped
  /// swift::ASTContext when successful.
  static swift::ASTContext *SetupASTContext(
  @@ -913,11 +892,6 @@ static swift::ASTContext *SetupASTContext(
  // swift_ast_context->GetLanguageOptions().DebugConstraintSolver = true;
  swift_ast_context->ClearDiagnostics();
  - // Make a class that will set/restore the colorize setting in the
  - // SwiftASTContext for us.
  -
  - // SetColorize colorize(swift_ast_context,
  - // stream.GetFlags().Test(Stream::eANSIColor));
  swift_ast_context->GetLanguageOptions().DebuggerSupport = true;
  // No longer part of debugger support, set it separately.
  swift_ast_context->GetLanguageOptions().EnableDollarIdentifiers = true;
  