By David Kirton YANQING, China (Reuters) – Four years on from claiming bronze in Pyeongchang, Britain’s Laura Deas is hoping to channel the spirit of Lizzy Yarnold, her retired teammate and the most successful Olympic skeleton athlete of all time, in part through a mug. “There’s a few mementos that I’ve brought with me so she’s here with me in spirit even if not in person,” said 33-year-old Deas, who has brought to China a bracelet given her by Yarnold and a mug with her friend’s image on it. “So every time I have a cup of tea, which is something that we used to do together, I think of her,” B…