Simplify Record model https://github.com/folio-org/data-import-raml-storage/blob/master/schemas/mod-source-record-storage/recordModel.json - remove rawRecord, errorRecord and snapshotId.

Update the records_lb table to remove corresponding constraints

Update DAO and Services to not account for those fields

Update descriptions of API and bump the version

Delete raw_records, error_records, snapshots tables