I know the OP isn't getting the gun, but if this is a carry or SD gun, I'd be very careful about removing any safety device, whether there's a version without a safety or not. In the unlikely event that you are in a situation where you had to use the gun to defend yourself, an unscrupulous DA could paint you as reckless because you removed the gun's safety device.
In the end, what you do to your gun is what you do. But you'll find most experts recommend against modifying a safety device of any kind on any weapon. They'll just say if you don't want a safety, find a gun that doesn't have one from the factory.
Beat me to it. I was going to post this exact thing. Nothing wrong with having it removed, but I'd much prefer to have some paperwork from S&W about a "variant conversion" or some such than just my testimony in court.