Determine content and fate of Archive Catalog

[LynnMcRae]

We know the fate ... it is being replaced. This tickets covers an inspection of its content to see if there is anything useful to bring over to the new catalog, and to cover the dropping of its data tables and any related cleanup.

The Archive Catalog is a mySql database in the sdr-services-app. It would be addressed in two places:

• in the register-sdr robot step of sdrIngestWF -- but that functionality seems to have been removed, that is, we no longer pre-register an object in the catalog at the start of ingest
• in the catalog-update step of ingest

[LynnMcRae]

This has been subsumed in all the new Preservation Catalog work