lint fixes

Author: Lunderberg

src/relax/transform/expand_tuple_arguments.cc

@@ -79,12 +79,11 @@ Optional<Function> ExpandParams(Function func) {
 
 class TupleExpander : public ExprMutator {
  public:
-  TupleExpander(PMap<GlobalVar, GlobalVar> callees) : replacements_(callees) {}
+  explicit TupleExpander(PMap<GlobalVar, GlobalVar> callees) : replacements_(callees) {}
 
   using ExprMutator::VisitExpr_;
 
   Expr VisitExpr_(const CallNode* op) override {
-    // TODO: Recursive expansion
     auto node = Downcast<Call>(ExprMutator::VisitExpr_(op));
 
     if (auto gvar = node->op.as<GlobalVar>()) {