[1711] Drop mid cycle report tables

[elceebee]

Context

see: #9459

Changes proposed in this pull request

Guidance to review

Link to Trello card

https://trello.com/c/YAxdUd1t

Things to check

• If the code removes any existing feature flags, a data migration has also been added to delete the entry from the database
• This code does not rely on migrations in the same Pull Request
• If this code includes a migration adding or changing columns, it also backfills existing records for consistency
• If this code adds a column to the DB, decide whether it needs to be in analytics yml file or analytics blocklist
• API release notes have been updated if necessary
• If it adds a significant user-facing change, is it documented in the CHANGELOG?
• Required environment variables have been updated added to the Azure KeyVault

[elceebee]

Remaining Clean-up for Recruitment Performance Report