The remaining three correspondents at “60 Minutes” huddled this week to discuss their futures following the firing of Scott Pelley, according to a report, as former star Steve Kroft warned that the iconic newsmagazine “no longer exists” in the form viewers have known for decades. Bill Whitaker, Lesley Stahl and Jon Wertheim met on Wednesday for more than an hour amid growing turmoil at CBS News following Pelley’s ouster and the sweeping shakeup orchestrated by CBS News editor-in-chief Bari Weiss, the Status newsletter reported on Thursday. The meeting came just hours after The Post reported that CBS insiders believed Whitaker...