“Only Murders in the Building” — Oliver, Charles and Mabel are taking their acts (and podcast) from New York to LA in Season 4.At least for a little while.The Hulu series starring Martin Short (Oliver Putnam), Steve Martin (Charles-Haden Savage) and Selena Gomez (Mabel Mora) is relocating its universe from the fictional Arconia building on the Upper West Side to the City of Angels.The move was confirmed by Disney Television Group President Craig Erwich, though there are no specifics — including how long the characters will remain in LA.In the Season 3 finale of “Murders,” Tobert (Jesse Williams) asked Mabel to head to LA with him; Mabel rejected the offer … but that may change with the show landing on the West Coast.“Well, I’m very excited to see Steve, Martin and Selena take a little break from the apartment building and come to Los Angeles,” Erwich told Deadline.