A Hispanic principal is systematically booting white, Jewish and older teachers from his Midtown high school, current and former staffers allege in lawsuits. “I think he hates us,’’ Peter Cohn, a former teacher at the HS of Art and Design, said of the school’s principal, Manuel Ureña. A Manhattan federal suit filed by teacher Todd Young claims Ureña, who is of Dominican heritage, initiated a mass faculty replacement at the school after being appointed principal in 2016. Young’s suit accuses Ureña of trumping up disciplinary and performance complaints against teachers to clear them out. “Since Principal Ureña has arrived at...