This phase was used to create live images with livecd-creator
and 32-bit ARM images with appliance-creator. We also remove
get_create_image_cmd from the Koji wrapper as it was only used
for this phase, remove associated tests, and remove related
configuration settings and documentation.
Fixes: https://pagure.io/pungi/issue/1753
Merges: https://pagure.io/pungi/pull-request/1774
Signed-off-by: Adam Williamson <awilliam@redhat.com>
531f0ef389