For system apps, in Settings > Apps > All apps, it's recommended that you do not change any of their permissions, including sensors, which are enabled for all system apps by default. Bear in mind that the sensors permission doesn't exist in upstream AOSP.
Most user-installed apps work fine wit the Sensors permission disabled, including Google Play Services. You can automatically disable the sensors permission for new user-installed apps in Settings. You will receive a pop-up notification if an app then wants to access the sensors, and you can either ignore it, or give it permission to do so. In my experience, I find it useful to give the Camera app the sensors permission, but deny access to any other apps which request it.
Edit: Correct to read "sensors permission".