I want to know what this is. It's been draining my battery even in background and won't let the device go into deep sleep. I don't even have the main Facebook app installed.
I just disabled it. Works for me that way.
If you don't have Facebook installed I would just disable like Kanu has suggested. If have an app that requires Facebook services you can always enable it again, and maybe check if there is a setting within the app to disable this service for you.