Asked to look back Saturday on Deron Williams’s historic shooting display for the Nets against the Wizards the previous night at Brooklyn’s Barclays Center, Coach Randy Wittman caught amnesia. “We didn’t play last night, did we?” Wittman said, cracking a smile. “I must’ve missed that.” Wittman wanted to quickly forget about a game in which his team, which considers defense to be a staple, allowed Williams to set an NBA record with nine first-half three-pointers. The easiest way to move on was with a game on the next night. And it helps if that game is against the NBA-worst Charlotte Bobcats, whom the Wizards routed, 104-87, at Verizon Center to snap a two-game losing streak. The dominant win featured Nene using force and finesse inside, Trevor Ariza and Martell Webster hitting from the outside, and rookie Bradley Beal once again watching from the sideline. With the victory, the Wizards (20-41) matched their season win total from the lockout-shortened, 66-game campaign last season — and put the loss to Brooklyn in the rear view.