By Matthew Neschis Rory McIlroy left Saturday’s round of the Wells Fargo Championship steaming ahead with no intention of looking back, and he was in a joking mood because of his strong drives. On Saturday, McIlroy shot a bogey-free 4-under 67 at the Quail Hollow Golf & Country Club, pulling within one stroke of tournament leader Xander Schauffele. The Northern Irishman once again established himself as one of the biggest hitters on the PGA Tour, averaging 332.8 yards and 187.9 mph off the tee – the fourth-best driving day of his entire career, according to CBS Sports’ Rick Gehman. It appears …