The parts manual calls these "vent pipes". My 110 has them as well. I can't give you the mechanical reason as to why they are there, but I'm sure someone else will chime in who can.
Most days, nothing comes out of them. In warmer weather, or after a long road trip, they will leave a couple drops of fuel on the garage floor. As long as you're not gushing fuel from them, you're fine.