The nodepool launcher server include the install-docker role which
installs docker-compose via pip then later explicitly installs
docker-compose again with our pip3 role installed pip. These two steps
should be redundant with one another. Now that we're transitioning to
docker compose on Noble we should let install-docker handle this
completely and remove the docker-compose install from nodepool-launcher.
Change-Id: Ibabafd8b5ca26a1ffe04f08996b5fce11980c0a2
f9dd73c2d1