NEW YORK — Mayor Eric Adams’ proposed $250 million cuts to preschool programs and youth services will drive more working class families out of the city, according to a letter from a coalition of more than 100 organizations obtained by the New York Daily News. Close to 8 in 10 families cannot afford to pay for child care or after-school, according to the Citizens’ Committee for Children of New York, part of the so-called “Campaign for Children.” Advocates say further reductions will only make a bad situation dire. The warning comes amid growing concern over the affordability of the city for mid…