Sony is shutting down its newly launched “Concord” game on Friday, two weeks and a day after its inauspicious debut in a crowded shooter game field. Sales will “cease immediately” and full refunds will be issued to those who purchased the team-based sci-fi game on PlayStation 5 and PC, said Ryan Ellis, game director at Firewalk Studios, a subsidiary of Sony Interactive Entertainment. In a statement addressing fans Tuesday on the PlayStation blog, Ellis said his team “been listening closely to your feedback since the launch” of the team-based first-person shooter game on Aug. 23. He thanked tho…