Paul McCartney has pulled out of an Adopt-A-Minefield charity fundraiser in Los Angeles--and as a result the event's been canceled. In the wake of his split from wife Heather Mills McCartney, the former Beatle "doesn't feel he can perform this year," said Adopt-A-Minefield director Keith Kelly. McCartney and Mills are--or were--joint patrons of the charity. The event is something they jointly hosted, Kelly said. .