Probably to make room for 4G
                                
                                
                                    (Newser) -
                                    Wal-Mart must really want to get rid of its iPhone 3GS stock, because it's slashed the price on the 16GB model of the phone to a mere $97—that's $100 off, and that's for a brand new one, not a refurbished model. Gee, why would Wal-Mart offer such a spectacular...