Yes. You may want to consider having your trees professionally pruned to let more sunlight through, remove overhanging branches that could break or drop leaves into the pool, and prune back anything impeding access to the pool and the equipment or seating around the pool, among other things.    You may also need to consider tree removal if a tree is too close, is blocking a view, or if it can't be pruned back far enough for your needs.  If you want to block a view, hide pool equipment, or muffle some surrounding noises, you may want to consider planting trees or shrubs.