‘Late Show’ no more: Late-night TV’s future uncertain as Colbert bows out

It’s almost lights out at “The Late Show,” as Stephen Colbert gets ready to say goodbye this week, and he may not be the last. CBS’s cancelation of “The Late Show,” first launched in 1993 with original host David Letterman, marks the latest shrinking of the late-night TV landscape, which has become increasingly political in…