THE ALL ENGLAND CLUB, London — Serena Williams’ Wimbledon comeback is officially over. Williams and her sister Venus pulled out of the women’s doubles tournament Saturday ahead of their first-round match, days after Williams made her return to Grand Slam tennis as a singles wild card with a 3-6, 7-6(6), 3-6 loss to 20-year-old Aussie Maya Joint in the first round. The day after that match, Williams, 44, said she’d tweaked her knee in the first set and was doing everything she could to return to