[Koha] remove all patron pictures

Hi all, I have been asked to remove all of our patron (student) photos from one site...due to the photos causing a slowdown in rendering the checkout page..... (I just added the photos last week...) A quick look at the Koha SQL tables shows a "patronimage" table.....my guess is that these are the images saved as a "blob" (or something like that....). Can I safely delete the table data (borrowernumber / mimetype / imagefile) without any repercussion ? or is there a preferred method to clear the photos out ? Thanks, -S