“Bob’s Burgers,” an animated show finishing its 12th season on Fox, is not really like anything else. It’s not irreverent or crass like its older Fox siblings “The Simpsons” or “Family Guy.” It’s animated plainly and portrays mundane situations — a family running a burger restaurant in a seaside town — that could be easily re-created on a live-action show. Yet this unassuming show has worked its way toward the top tier of the animated show pantheon in the past decade, and its new feature-length film, “The Bob’s Burgers Movie,” solidifies it successfully, if a bit routinely. Directors Loren Bou…