Pittsburgh Mayor Corey O'Connor is pushing back on Morgan Wallen 's excuse for scrapping a concert in his town ... and he says Morgan's full of it. The country music star claims he consulted Pittsburgh officials before calling off his Saturday performance due to a bad weather forecast ... but Mayor O'Connor says Morgan never actually talked to them and was acting on his own. O'Connor told KDKA Radio ... "There was no contact to Public Safety or my administration so however the artist and his