Delete the osbuild-koji tools, which is not used by any code or test
case. This also allows to delete the koji.NewFromPlain() function. This
is to minimize the set of exported functions by the koji package, before
moving it to osbuild/images repository.
Signed-off-by: Tomáš Hozza <thozza@redhat.com>
This commit removes the direct use of `pkg/distro/fedora` and
uses `distrofactory` instead. This is the more generic interface,
it also helps with PR#1563 as `pkg/distro/fedora` goes away.
Note that I did not test this but @bcl was kind enough to
mention how this is used:
```
The output from this is used in Test_upgrade in
internal/store/json_test.go, the files there are manually
created when we change the format of the store and add a new
parser to internal/store/json.go -- which hasn't happened in
a long time :)
```
I updated the cmd/README with a snippet of the above.
