Function CFNotificationCenterRemoveObserver 

pub unsafe extern "C-unwind" fn CFNotificationCenterRemoveObserver(
    center: &CFNotificationCenter,
    observer: *const c_void,
    name: Option<&CFNotificationName>,
    object: *const c_void,
)

👎Deprecated:

renamed to CFNotificationCenter::remove_observer

Available on crate feature CFNotificationCenter only.