You are correct. There is no option to remove periods. If there are periods in the record, and you choose full name, the periods are included for middle initial (and any authors that are only entered as initials with periods). Manually omitting the periods from the author field of each record would work, but not if you then chose a style that required periods and it is frankly, a bit of a pain in the neck. You will need to request a similar option to that in “journals” to omit periods after initials, or another option in the drop down to select the two scenarios.