Torrents not removed from session after deleting

[winterqt]

When deleting (a large amount of) torrents, sometimes a portion of them don't get removed from the session directory. After restarting the client, these torrents are stopped.

To reproduce:

1. Delete a large amount of torrents with Flood
2. Wait for the operation to succeed
3. Restart rTorrent

Version: 0.9.8-r16

[winterqt]

Something to note is that if the option to delete data is enabled in Flood, then the data is properly deleted, at least for some of the torrents. rTorrent acknowledges this by way of the hash check returning unfinished chunks when trying to start these improperly deleted torrents.

[winterqt]

After adding some additional logging to rTorrent, it appears that DownloadStore::remove isn't being called at all for these torrents.