src: fix unused namespace member in node_util

PR-URL: #34565
Reviewed-By: Zeyu Yang <himself65@outlook.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node_util.cc

@@ -21,7 +21,6 @@ using v8::Integer;
 using v8::Isolate;
 using v8::KeyCollectionMode;
 using v8::Local;
-using v8::MaybeLocal;
 using v8::Object;
 using v8::ONLY_CONFIGURABLE;
 using v8::ONLY_ENUMERABLE;