Ryan Chua

**I'm submitting a ...** ``` [x] bug report [ ] feature request [ ] support request ``` **Codesandbox Case (Bug Reports)** https://codesandbox.io/s/trusting-khayyam-2dr5z **Current behavior** If all rows are set to...

## Summary Based off of [this issue](https://github.com/CityOfZion/neo-python/issues/1001), this PR updates the `Dockerfile-gremlin` file so that running ```docker-compose -f docker-compose/docker-compose.yml build``` no longer fails. ### Original Error 

## About Removes `unfold/2` and its associated test since it does not take in a parameter, as documented on the [site](http://tinkerpop.apache.org/docs/3.4.3/reference/#unfold-step).