NMO was removed back in 4.10, remove tests associated

[dbasunag]

Short description:

More details:

What this PR does / why we need it:

Which issue(s) this PR fixes:

Special notes for reviewer:

jira-ticket:

[redhat-cnv-qe-bot1]

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  verified label removed on each new commit push.
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• /retest build-container: Retest build-container
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[polarion-jenkins]

D/S test tox -e verify-bugs-are-open passed: cnv-tests-tox-executor/6225

[polarion-jenkins]

D/S test tox -e verify-bugs-are-open passed: cnv-tests-tox-executor/6251

[dbasunag]

/retest all

[polarion-jenkins]

D/S test tox -e verify-bugs-are-open passed: cnv-tests-tox-executor/6300