Uninstalling

Deactivating leaves everything alone. Deleting the plugin deletes your redirects and your broken links list only if you ticked the box under Settings → When uninstalling first. The same box covers the permalink changes it remembered. Its scheduled jobs are cleared either way, and on deactivating too, and so are trrd_manage_redirects and trrd_redirect_off_site from any role a role editor plugin gave them to.