You never want the word “cute” to be associated with Al Pacino or Christopher Walken to begin with, let alone an action-comedy starring both of them. You certainly don’t want the term “sappy” to apply. Unfortunately, Fisher Stevens’s "Stand Up Guys" is just that: cute and sappy, with too few smart-alecky laughs to spice up its bland soul. Pacino is a faded hitman just sprung from a twenty eight-year jail stint for the accidental killing of a