src: remove unused variable in node_builtins.cc

Author: targos

src/node_builtins.cc

@@ -560,7 +560,6 @@ void BuiltinLoader::GetCacheUsage(const FunctionCallbackInfo<Value>& args) {
 
   Local<Value> builtins_with_cache_js;
   Local<Value> builtins_without_cache_js;
-  Local<Value> builtins_in_snapshot_js;
   if (!ToV8Value(context, realm->builtins_with_cache)
            .ToLocal(&builtins_with_cache_js)) {
     return;