Could the pool be used in existing condition or with minor repair? If not, I would generally recommend having it removed before listing it. But because we are in the middle of the spring market when you have the best chance of getting a great price for the home, I recommend getting the house on the market as soon as possible. March, April and May are the busiest months in real estate.
What you can do if the pool is not in good shape is get written estimates from contractors to remove it. Buyers don't know how much it will cost to remove the pool and by getting written estimates you can alleviate the buyer's fear of it being too expensive. You can also offer a "credit" to buyer's to cover the cost of having it removed, so it becomes a real non-issue.
I'm an agent in your area (I live in Glen Rock.) If I can help you sell please give me a call at 201-421-0506.