Remove tox functional
Remove tox functional

This is no longer used.

Change-Id: I997051d175ef2998e6bd9d8c87fad5780ca5965d
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack/ansible-role-diskimage-builder