Hi Jeff and welcome to the forum.
Answer, depends. How low is the bottom of the sink compared to the waterline of the
boat? Will the bottom of the sink be below the waterline when the
boat it heels over on one tack or the other?
The loops could be just a lazy
installation and you could remove the loops OR could be because the space is limited and the hose would kink without the loop or could be to keep
water from pushing back up into the sink when the boat is sailing or some other reason I can't think of or no reason at all.
Worst case scenario, remove the loops and try it out. If you discover some problem with that, put another piece of hose in and restore the loops.
Just make sure the sink doesn't fill up and sink the boat when you're testing it.