bulk2 delete function not working with records parameter

[michaelhollander]

To recreate:

records = [{"Id": "0062300000IdMo2AAF"},{"Id": "0062300000IdMo3AAF"}]

sf.bulk2.Contact.delete(records = records)

What I expect: the deletion to work as normal.

What actually happens: I get an error on line 646 of bulk2. The problem seems to be that although bulk2 allows you to pass in the records to delete using the records parameter, that param isn't actually used on on line 646

if operation in (Operation.delete, Operation.hard_delete):
            with open(csv_file, "r", encoding="utf-8") as bis:

The other operations don't appear to have this problem.