MIAMI — With the United States warning Americans to get out of Haiti and planes flying down empty amid the country’s spike in kidnappings and gang-aggravated fuel crisis, American Airlines is cutting back service. The major U.S. carrier said that as of Monday it will no longer be operating its three daily flights to Port-au-Prince, one from Fort Lauderdale-Hollywood International Airport and two from Miami International Airport. “Effective Monday, Nov. 15, we will be reducing our flying to Haiti to one daily flight between Port-au-Prince (PAP) and Miami (MIA),” spokeswoman Laura Masvidal said....