How to delete multiple DP from ICC Admin toll

We are in VIM 6 SP 5. We have around 9000 unnecessary DP documents which we want to delete. We tried to delete using 'Discard Image' option in ICC admin tool (/OPT/VIM_7AX8), however, it only allows one document at a time. This would take very long hours to delete all. We don't have any immediate plan for upgrading to VIM 6 SP 6 where multiple select option for deleting is there.

Can you suggest any function module or report by which we can delete all our unnecessary DP documents?

Regards,
Pranay Pal