Few titles have ever been so accurate: “Minions” has Minions. That’s pretty much it. Sandra Bullock voices a baddie and there’s some kind of a plot. You won’t remember either, and it doesn’t matter. What does matter — and this truly can’t be emphasized enough — is the presence of Minions: the babbling yellow baby whatzits that handily stole the two “Despicable Me” toons from their supervillain star (Steve Carell). The movie could be 90 minutes of them against a white screen staring at you and it would be thoroughly watchable. Their spinoff movie does slightly more than that, though only slightly, and even if it did less that would be OK, too.