JetBlue's second-quarter profits fell 82% compared to last year.Nicolas Economou/NurPhoto via Getty ImagesJetBlue has eliminated hot meals for economy passengers on transatlantic flights.It comes as the airline reported a profit of 82% less than last year.Low-cost and ultra-low-cost carriers are making significant changes as they seek to stay profitable.JetBlue has axed hot meals for economy passengers as it looks to save money.The airline's menu for the fourth quarter notes: "All items served chilled."For main courses during lunch and dinner on transatlantic flights, there are only two options.