Remove code which was causing proxy crash (#4257)

* Remove code which was causing proxy crash

Crash could be reproduced with e.g.:
```
people = realm.objects(Person);
peopleProxy = new Proxy(people, {get: () => {} });
Object.prototype.toString.call(peopleProxy);
```

* Update changelog

* Remove commented out code

CHANGELOG.md

@@ -5,7 +5,7 @@ x.x.x Release notes (yyyy-MM-dd)
 
 ### Fixed
 * <How to hit and notice issue? what was the impact?> ([#????](https://github.com/realm/realm-js/issues/????), since v?.?.?)
-* None.
+* Fixed a crash when using `Proxy` with a `Realm.Results` object ([#4257]https://github.com/realm/realm-js/pull/4257)
 
 ### Compatibility
 * MongoDB Realm Cloud.

src/node/node_class.hpp

@@ -933,10 +933,6 @@ Napi::Value WrappedObject<ClassType>::ProxyHandler::get_own_property_descriptor_
     Napi::Env env = info.Env();
     Napi::EscapableHandleScope scope(env);
 
-    // Napi::Object target = info[0].As<Napi::Object>();
-    Napi::String key = info[1].As<Napi::String>();
-    std::string text = key;
-
     Napi::Object descriptor = Napi::Object::New(env);
     descriptor.Set("enumerable", Napi::Boolean::New(env, true));
     descriptor.Set("configurable", Napi::Boolean::New(env, true));