A judge has granted permission for owners of the CityCenter development to demolish a flawed, half-built Las Vegas Strip hotel tower on the Strip after developers completed a fourth round of testing on the building. Clark County District Judge Elizabeth Gonzalez approved CityCenter’s motion Friday, clearing the way for owners MGM Resorts International and Dubai World to raze the Harmon Hotel tower. CityCenter officials said they would immediately start planning for the demolition, which could happen within a year. The Harmon was supposed to be a 48-story Las Vegas Strip hotel, and a part of the glittery $8.5 billion CityCenter…