A deal struck between Philippine President Rodrigo Duterte and the Marcos family could be behind the sudden withdrawal of his loyal ally Senator Christopher “Bong” Go from the presidential race, politicians and analysts said on Tuesday.Go on Tuesday told reporters that he was exiting the race just 17 days after filing his candidacy for president, accompanied by Duterte himself.“I am withdrawing from the race,” Go said. “In the past few days, I realised my heart and my mind are contradicting my…