esm: remove --no-import-harmony-assertions

It is off by default now.

PR-URL: #54890
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node.cc

@@ -753,9 +753,6 @@ static ExitCode ProcessGlobalArgsInternal(std::vector<std::string>* args,
                 "--no-harmony-import-attributes") == v8_args.end()) {
     v8_args.emplace_back("--harmony-import-attributes");
   }
-  // TODO(nicolo-ribaudo): remove this once V8 doesn't enable it by default
-  // anymore.
-  v8_args.emplace_back("--no-harmony-import-assertions");
 
   auto env_opts = per_process::cli_options->per_isolate->per_env;
   if (std::find(v8_args.begin(), v8_args.end(),