I’m not one of those who have universally decried Robert De Niro’s recent movie role choices. I don’t begrudge him a little fun and few easy paycheques as he enters his later years. Some of them have been okay (DIRTY GRANDPA), some of them less so, and with THE WAR WITH GRANDPA, it’s easy to see how he could have signed up for the potential only to be cruelly disappointed by the execution. After…