message: fix warning after client reset test got disabled
diff: @@ -266,6 +266,7 @@ static auto make_error_handler()
  return std::make_pair(std::move(error_future), std::move(fn));
  }
  +#if 0
  static auto make_client_reset_handler()
  {
  auto [reset_promise, reset_future] = util::make_promise_future<ClientResyncMode>();
  @@ -275,9 +276,7 @@ static auto make_client_reset_handler()
  };
  return std::make_pair(std::move(reset_future), std::move(fn));
  }
  -
  // Re-enable these tests in RCORE-1264 when the server websocket disconnect issues are resolved.
  -#if 0
  TEST_CASE("flx: client reset", "[sync][flx][app][client reset]") {
  Schema schema{
  {"TopLevel",
  