message: [lldb] Don't double emit option groups
  We currently emit the option groups twice if Groups<[1,2,3]> is
  used in the tablegen. This leads to compilation errors. This
  patch just removes the line that accidentially emits the option
  group a second time.
diff: @@ -44,7 +44,6 @@ static void emitOption(Record *Option, raw_ostream &OS) {
  auto Groups = Option->getValueAsListOfInts("Groups");
  for (int Group : Groups)
  GroupsArg.push_back("LLDB_OPT_SET_" + std::to_string(Group));
  - OS << llvm::join(GroupsArg.begin(), GroupsArg.end(), " | ");
  } else if (Option->getValue("GroupStart")) {
  // The user specified a range of groups (with potentially only one element).
  int GroupStart = Option->getValueAsInt("GroupStart");
  