I’m surprised how much I enjoyed this “Ghostbusters” follow-up. The story in “Ghostbusters: Frozen Empire” shifts from the characters’ small Podunk town to the Big Apple, where the ghost removal business all began in 1984. The youngest girl of the family of ghostbusters, Phoebe Spengler (Mckenna Grace) can’t join the ghostly proceedings because she’s a minor. In the mix this time is William Atherton, who played jerk bureaucrat Walter Peck in the original. He’s still playing a jerk, but this...