“The Running Man ” and “Now You See Me: Now You Don’t” are heading toward a box office face-off as both movies are predicted to open with $20 million to $25 million this weekend. Paramount’s dystopian thriller “The Running Man” has made $1.9 million in previews, while Lionsgate’s magic heist movie “Now You See Me: Now You Don’t” edged it out $2.1 million. Both movies are on track to beat last week’s box office champion, Disney’s “Predator: Badlands,” which is estimated to make $18 million to $