Remove Docker Compose workflow

[egeldenhuys]

Previously Docks was not swarm compatible due to localhost not reliable resolving and some other limitations.

Docks can now be deployed with something like:

git clone https://github.com/TripleParity/docks
cd docks
docker swarm init
docker stack deploy -c docker-compose.yml docks
docker stack deploy -c docker-compose-nginx.yml nginx-demo

# Visit http://127.0.0.1:4200