AFPAlthough Colin Jost is no stranger to solo stand-up comedy, most of America recognizes him best as part of a duo. He’s famous for being the straight-edged “Weekend Update” co-anchor on Saturday Night Live, working alongside the much raunchier, more dangerous Michael Che. How would Jost fare on his own? The answer, it turns out, is perfectly fine. His roast at Saturday night’s White House Correspondents’ Dinner was nowhere near as brutal as Stephen Colbert’s famous WHCD roast in 2006, but it w