Deanna Kocher: If they've been contributed and are on the server (cloud drive), they should appear if you click the sync button. Deleting them from your windows explorer should then remove them. It's possible that soldiworks automatically removes them if it's running, and sees that the corresponding file is not currently open in soldiworks.

If you can't get them to re-appear, you could go to the web version of wikifactory, and use the delete button on the files in question, before finalising a contribution from the web. If you were then to sync the latest cloud to your device via via desktop app > sync now, they will be gone.

Let me know if that helps :)