If you don't want Bates numbers to appear in your documents:

During Step 6 of the Production Wizard ("Select tag placement for production") select "no placement" in the dropdown to the right of the 'Bates Stamp' category. This will suppress any Bates numbers for appearing on the document.
Select 'no-placement' against Bates Stamp

If you want to use original file names without Bates numbering:

During Step 8 of the Production Wizard ("Bates Numbering Options") leave the Bates Stamp text boxes empty.

Then, during Step 9 ("File naming options,") select "Original file names."

Bates numbers will not appear anywhere in the produced documents. 
Note that both the above options can be used in parallel.