THE SUICIDE SQUAD! How do you parody a trailer that’s already silly and outrageous? You don’t – you leave it alone. But we learned that lesson too late so here’s this thing, in which Harley fails to Quinntimidate I-can’t-Think-of-his-name, Peacemaker appeases with a prepackaged peace offering, Blackguard flicks rags, Rick Flag doesn’t guard his back, …