How to remove old auto-saved recovery sessions?

In the current version of Disk Drill for macOS, you can remove such auto-saves only manually:

1. Close Disk Drill
2. Open Finder and press Command+Shift+G
3. Type ~/Library/Application Support/DiskDrill to access the folder with auto-saves
4. Remove unwanted auto-saves

Once all auto-saves are removed, Disk Drill will no longer remind you to continue past recovery scans.