By Andreas Rinke BERLIN (Reuters) -German Chancellor Olaf Scholz, who was heavily criticised for a trip to Beijing this week, said on Saturday his and Chinese President Xi Jinping’s joint statement opposing the use of nuclear weapons in Ukraine had been reason enough for the visit. Scholz’s comments came a day after his visit to the world’s second-biggest economy alongside German corporate CEOs, the first by a G7 leader since the COVID-19 pandemic. “Because the Chinese government, the president and I were able to declare that no nuclear weapons should be used in this war, that alone made the w…