Former White House attorney Ty Cobb is convinced reason finally won out over Donald Trump’s ego Monday. Cobb appeared on CNN Monday night to discuss the former president’s decision not to take the stand in his $250 million civil fraud trial. “He was not an effective witness, no matter you know, what the PR is from the other side,” Cobb said. “He’s not going to get cross-examined much on what he’s going to say, he will get taken through a litany of all the lies that he’s told during the relevant period for this trial.” POLL: Should Trump be allowed to run for office? Cobb noted the 45th preside…