ORLANDO, Fla. — On the heels of the state’s so-called ”Don’t Say Gay” law, the Florida Department of Education has quietly dropped out of a 31-year-old CDC survey of students that includes questions of mental well-being, suicidal thoughts, sexual orientation and gender identity. Mental health advocates called the move “an incredibly dangerous precedent” and said the data produced by the survey is essential for understanding the struggles of adolescents and teens and guiding public policy. The department did not respond to a request to explain the decision. Norín Dollard, a senior policy analys…