Summary:
Ref T1191. This destroys surplus columns:
- Pholio's transaction comments have a `mockID` column, but this is not used. The `imageID` column is used instead.
- Phragment has an unused `description` column.
- Releeph has an unused `summary` column.
Test Plan:
- Grepped for usage of these columns.
- Checked that these exist in production, too.
- Ran upgrades.
- Added Pholio inline comments.
- Saw fewer warnings.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley, hach-que
Maniphest Tasks: T1191
Differential Revision: https://secure.phabricator.com/D10591
