message: Remove internal c++ lint commands.
diff: @@ -302,7 +302,6 @@ static bool IsTopLevelListItem(const verible::SyntaxTreeContext& context) {
  static bool DirectParentIsFlowControlConstruct(
  const verible::SyntaxTreeContext& context) {
  return context.DirectParentIsOneOf({
  - // LINT.IfChange(flow_control_parents)
  NodeEnum::kCaseStatement, //
  NodeEnum::kForLoopStatement, //
  NodeEnum::kForeverLoopStatement, //
  @@ -311,7 +310,6 @@ static bool DirectParentIsFlowControlConstruct(
  NodeEnum::kDoWhileLoopStatement, //
  NodeEnum::kForeachLoopStatement, //
  NodeEnum::kConditionalStatement,
  - // LINT.ThenChange(:flow_control_cases)
  });
  }
  @@ -611,7 +609,6 @@ void TreeUnwrapper::Visit(const verible::SyntaxTreeNode& node) {
  // single-statement if/for loops.
  // Keep this group of cases in sync with (earlier in this file):
  // DirectParentIsFlowControlConstruct()
  - // LINT.IfChange(flow_control_cases)
  case NodeEnum::kCaseStatement:
  case NodeEnum::kForLoopStatement:
  case NodeEnum::kForeverLoopStatement:
  @@ -620,7 +617,6 @@ void TreeUnwrapper::Visit(const verible::SyntaxTreeNode& node) {
  case NodeEnum::kDoWhileLoopStatement:
  case NodeEnum::kForeachLoopStatement:
  case NodeEnum::kConditionalStatement:
  - // LINT.IfChange(:flow_control_parents)
  {
  if (IsTopLevelListItem(Context())) {
  // Create a level of grouping without additional indentation.
  