There needs to be a way to completely delete a url that contains a document that I want deleted entirely.
Vimal Dobhal commented
If you sharing a document via Share->Create Link option you can always unshare it by following below steps :
1. Go To Home View
2. Click on For View tab
3. Select the document which yo have sent via link
4. Click on Unshare option from the context board options
Please let us know if this resolved your query.