Remove unnecessary secrets in kv-secrets.yaml that relate to a specific data partition.

Originally the kv-secrets.yaml file was holding secrets that were used for services to connect to Cosmos and Storage. Now that Data Partition Service has been fully implemented and all charts migrated to use Data partition these secrets should be removed so that the dependency of a datapartition called opendes is not required.

- secretName: storage
    type: Opaque
    data:
    - objectName: "opendes-storage"
      key: storage-account
    - objectName: "opendes-storage-key"
      key: storage-key
  - secretName: cosmos
    type: Opaque
    data:
    - objectName: "opendes-cosmos-endpoint"
      key: cosmos-endpoint
    - objectName: "opendes-cosmos-connection"
      key: cosmos-connection
    - objectName: "opendes-cosmos-primary-key"
      key: cosmos-primary-key
  - secretName: servicebus
    type: Opaque
    data:
    - objectName: "opendes-sb-namespace"
      key: servicebus-namespace
    - objectName: "opendes-sb-connection"
      key: servicebus-connection