ceph: Removed the storage provisioners usage rules.

[anmolsachan]

In the interest of having the metrics available generically for all the storage provisioners and just not ceph provisioners, the superseding metrics will be added to Openshift directly. Thus, these metrics won't be required in rook.

PR on OCP for the same functionality: openshift/cluster-monitoring-operator#892

Also, fixes: #6011

Signed-off-by: Anmol Sachan anmol13694@gmail.com

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• Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
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[skip ci]