Golden shower, more like. The unpleasant, unrelenting Kingsman: The Golden Circle drenches viewers in water-thin spy adventuring for a demanding two hour twenty session, before zipping up and flipping the bird, leaving a faint funk hanging in the room. 2014’s Kingsman: The Secret Service, Matthew Vaughn and Jane Goldman working off Mark Millar’s comic, pursued its ‘Bond, but chav’ conceit with a comic bravado that was often ridiculous or annoying but at least showed some chutzpah, subverting Her Majesty’s Service niceties with its vein of laddish nastiness. Vaughn and Goldman return for the sequel, the former directing again, and the…