chore(cleanup): remove stale cstor code

[shubham14bajpai]

Signed-off-by: shubham shubham.bajpai@mayadata.io

What this PR does?:
As part of deprecating this repo and upgrading the k8s dependencies for the last time, we are going to remove unused and stale code from the repo. This PR removes the stale cstor code which has been moved to openebs/cstor-operators repo.

The CRD code of cstor-pool-mgmt code related to SPC management, has moved to openebs/api.

Does this PR require any upgrade changes?:

If the changes in this PR are manually verified, list down the scenarios covered::

Any additional information for your reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• Fixes #
• PR Title follows the convention of <type>(<scope>): <subject>
• Has the change log section been updated?
• Commit has unit tests
• Commit has integration tests
• (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[kmova]

Looks good.

Just to confirm, the cstor-pool-mgmt related files being removed are deprecated due to the v1 migration. Is this right?

[prateekpandey14]

Just to confirm, the cstor-pool-mgmt related files being removed are deprecated due to the v1 migration. Is this right?

Yes @kmova