Dad of grade-school theft victim says cops were too harsh on handcuffed 7-year-old

Even the dad of the boy who accused little Wilson Reyes of robbing him thinks the cops acted outrageously. Santiago Acevedo, whose 9-year-old son was supposedly robbed of $5 in the incident in which 7-year-old Wilson was caught up, yesterday told The Post police went overboard in allegedly interrogating and…