Follow up un-archiving - DEC 2018

[colinbruce]

See #2405

After an update to paper trail, previous versions of claims could not be restored.

As claims are archived, natural wastage should ensure they should drop out of the database.

Once they are all gone, this class will be superflouous and can be removed.

Run the following query to see how many stored versions remain.

SELECT count(*) FROM versions WHERE object ~ '.*evidence_checklist_ids:\n-.*';

Initial count: 1,229,882

[colinbruce]

Count on 12 November: 1,230,027
Are versions deleted when the source is? I would have expected the number to reduce significantly since June 🤔
For the record, ran

ActiveRecord::Base.connection.execute("SELECT count(*) FROM versions WHERE object ~ '.*evidence_checklist_ids:\n-.*';").to_a

[mpw5]

Count on 26 April 2022: 1,230,267 😬