MODE-2394: Updates to the Vdb Sequencer in line with Teiid Schema

* Updates the Vdb sequencer's cnd model and lexicon to reflect the schema
  included in the latest version of teiid.
In that case, the easiest is probably to remove the property definitions (as you have done in this PR). Remember that since `vdb:virtualDatabase` has `nt:unstructured` for a super type, nodes that have those properties will still be valid, since the properties would become residual properties valid for `nt:unstructured`.