Updated openstack/openstack
Project: openstack-dev/devstack  bfadd227ecd593d1aa151246fdc18952fcbe9d37

heat remove copy of sample config file

We're moving to a model like nova where we don't maintain a static
sample config, instead providing a readme showing how to generate
it in https://review.openstack.org/#/c/138800/, so this change
is needed before we can land that change.

Change-Id: I335a33646eef72962c9036dcd1de50144d8575c8