LOS ANGELES — Mitt Romney’s brother filed for divorce just four months before his estranged wife plunged to her death from a California parking garage – and tried to make sure courts awarded her nothing in the split, according to documents. George Scott Romney, 81, filed the case against 64-year-old Carrie Elizabeth Romney on June 12, citing “irreconcilable differences,” according to court documents obtained by The Post. Despite being married more than eight years, starting in 2016, he said that they had no shared property that needed to be divided by the courts. Romney also sought to “terminate the court’s...