Feb 6 (Reuters) - The New York Giants, facing salary cap issues one year removed from winning the Super Bowl, released the team's leading rusher in Ahmad Bradshaw and defensive tackle Chris Canty on Wednesday. The moves followed Tuesday's cutting of veteran linebacker Michael Boley. The hard-running Bradshaw, who turns 27 next month, led the Giants last season with 1,015 yards rushing, despite missing games at Carolina with a neck injury and Atlanta with a sprained knee.