Remove Managed Connector API, CRD and K8S Managed Deployment

[simlay]

• [ ] Remove connector from Fluvio rust client metadata
• [ ] Remove Kubernetes Managed Deployment
• [ ] Remove Connector API stuff
• [ ] Remove managed connector helm chart.
• [ ] Remove connector stuff from fluvio-controlplane-metadata.

Depends on:

• [ ] https://github.com/infinyon/fluvio-connectors/issues/312 and
• [x] https://github.com/infinyon/fluvio-connectors/issues/311