src: remove unused variable

PR-URL: #26879 Reviewed-By: Yongsheng Zhang <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>

Author: cjihrig

src/js_native_api_v8.cc

@@ -1513,7 +1513,6 @@ static inline napi_status set_error_code(napi_env env,
  napi_value code,
 constchar* code_cstring){
 if ((code != nullptr) || (code_cstring != nullptr)){
- v8::Isolate* isolate = env->isolate;
  v8::Local<v8::Context> context = env->context();
  v8::Local<v8::Object> err_object = error.As<v8::Object>();