Revert "Point API to new restored database in Staging"
Revert "Point API to new restored database in Staging"

Renaming new service to digitalmarketplace_api_db (see https://alphagov.github.io/digitalmarketplace-manual/infrastructure/database-backups.html?highlight=database%20restore#restoring-from-a-backup)

This reverts commit 9d0c3512

alphagov/digitalmarketplace-aws,alphagov/digitalmarketplace-aws,alphagov/digitalmarketplace-aws