(Reuters) -England head coach Chris Silverwood has stepped down following the team’s meek surrender in the Ashes series against Australia, the England and Wales Cricket Board (ECB) said on Thursday. Silverwood had come under pressure after England lost the five-test Ashes series 4-0, with former skipper Mike Atherton calling for a complete overhaul of the England management. The announcement comes a day after Ashley Giles left his role as the managing director. “It’s been an absolute honour to be England head coach, and I’m extremely proud to have worked alongside our players and staff,” Silve…