Like any responsible artist, Benicio del Toro warns against viewing his new movie, “Sicario: Day of the Soldado,” as a simplistic political statement. Which is difficult. As the sequel to 2015’s acclaimed crime thriller “Sicario,” ”Day of the Soldado” exploits anxieties about terrorism and border security to set up its chaotic game of human chess. Flitting between either side of the U.S.-Mexico border at a time when the immigration debate involves our government holding children in cages, “Soldado” can scarcely escape a topical reading.