If your not talking about a huge amount of files and you have admin rights you can just right click and delete them. Be sure you still have a local copy as with my set up it deletes them upon check-in. If you're needing a batch type delete I am unsure how to do that.
Make sure you take owner ship of the file to delete it. option in right click menu is delete/rollback. You can hold Ctrl and select as many files as you want to delete at once. Hope this helps.
Move all of the files you want to keep to their respective projects then in the Admin Tool delete the project you used to Bulk import into this will remove all of the files remaining in it. Always backup the vault before performing a procedure like this just incase.
It was a single file. However, now that I've trudged trough more of the check in, there are a lot of files that need purged. I think this method will be more time effective for me if I just move all the undesired files to a "junk" project for deletion. Thank You!
One thing to note, if you delete it, it actually isn't deleted from the VaultData folder permanently, a backup of the delete files is stored on the obsolete folder :-)
Make sure you take owner ship of the file to delete it. option in right click menu is delete/rollback. You can hold Ctrl and select as many files as you want to delete at once. Hope this helps.