Kate Aurthur editorThe last time “Atlanta” was on the air — on May 10, 2018 — Donald Trump was still president, no one had heard of COVID and the show’s creator, Donald Glover, debuted as Lando Calrissian in “Solo: A Star Wars Story,” which was released later that month. If you can’t remember such a time, don’t worry: Neither can anyone else.Season 3 of “Atlanta” — delayed at length by both Glover’s schedule and by the pandemic — is scheduled to premiere on FX on Thursday with two episodes (they’ll stream the next day on Hulu).