Remove crd manifest which is now in cluster-config-operator

[sttts]

Depends on openshift/cluster-config-operator#23.

[openshift-ci-robot]

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[openshift-ci-robot]

@sttts: The following test failed for commit fd8d81b, say /retest to rerun them:

Test name	Details	Rerun command
ci/prow/e2e-aws	link	/test e2e-aws

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[sttts]

/retest

[danwinship]

sorry, forgot to re-review this, and now it seems soltysh submitted a duplicate PR (#124) which is already lgtm'ed