src: remove unused using declarations in node.cc

PR-URL: #33261
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

src/node.cc

@@ -113,10 +113,8 @@ using native_module::NativeModuleEnv;
 using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
-using v8::HandleScope;
 using v8::Isolate;
 using v8::Local;
-using v8::Maybe;
 using v8::MaybeLocal;
 using v8::Object;
 using v8::String;