the backup MetaDB changed

Change-Id: I1cba53e04f213f47821dae21de2e386457f543c5
Was only ever called with one arg

Besides, any interaction with UR::DataSource::Meta is going to be with
simple table names that do not include a schema.

Change-Id: I671f8c7f8ca7f062a5883a7d8230c3b2f7969267