How do I delete photos imported via the Camera Connection Kit (CCK)?
When photos are ingested/imported via Apple's Camera Connection Kit, they are imported to the Photos.app and not Photosmith. By Apple's rules, third-party apps like Photosmith do not have direct access to modify or delete photos in Camera Roll, nor can third-party apps import photos from Camera Connection Kit directly into their own memory space.
The best way to delete photos in Photos.app Camera Roll en masse is outlined in Section 3.2.6.
To delete photos in Photosmith's catalog, see Section 3.2.5.