Remove the direct MCO dependency

[hawkowl]

This dependency has been replaced by the OpenShift APIs package.

[openshift-ci]

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[hawkowl]

Actually, this'll need to happen in 4.16?

[openshift-ci]

@hawkowl: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/images	75d4e96	link	true	/test images
ci/prow/lint	75d4e96	link	true	/test lint
ci/prow/validate	75d4e96	link	true	/test validate
ci/prow/unit	75d4e96	link	true	/test unit

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