You have been given the best answer (twice), remove elements that you don't use. I only use three of the providers, the rest are removed.
If you subsequently find that you need one of the removed providers, say p2p, then you can reverse the process.
It's your computer, of course you decide what to do with it, we only offered suggestions, but why ask a question that you have already have your own answer?
Yes terminating them will stop them running, but it won't stop them being present in the list of on-access scanners.