It seems like the general consensus is that its not a problem, but if you do want to remove it with a wire brush or some steel wool, and want to delay other rust from building up, you could get some cold galv spray
https://www.amazon.com/Rust-Oleum-75.../dp/B00106H68W and galvanize the springs. not 100% sure how well it works on moving parts, but it should help