Remove leftover image default for nova-conductor in cell

[mrkisaolamb]

Resolves: https://issues.redhat.com/browse/OSPCIX-109

[openshift-ci]

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[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://review.rdoproject.org/zuul/buildset/39aaddc320494d8e8961da39da7f55a2

❌ nova-operator-content-provider FAILURE in 8m 43s
⚠️ nova-operator-kuttl SKIPPED Skipped due to failed job nova-operator-content-provider
⚠️ nova-operator-tempest-multinode SKIPPED Skipped due to failed job nova-operator-content-provider

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://review.rdoproject.org/zuul/buildset/049e293d3a2e48f5b3c05402d044e4de

❌ nova-operator-content-provider FAILURE in 10m 16s
⚠️ nova-operator-kuttl SKIPPED Skipped due to failed job nova-operator-content-provider
⚠️ nova-operator-tempest-multinode SKIPPED Skipped due to failed job nova-operator-content-provider

[karelyatin]

/lgtm

The failure seems fork specific

[mrkisaolamb]

recheck