bin: remove ExtraNodes at root level

src/bin/kbinxml.rs

@@ -43,9 +43,6 @@ pub struct Testing {
   hhg: (u32, u32),
   foo: String,
   testing2: Testing2,
-
-  #[serde(flatten)]
-  extra: ExtraNodes,
 }
 
 fn display_err(err: impl Fail) -> IoError {
@@ -175,7 +172,6 @@ fn main() -> std::io::Result<()> {
         ip: Ip4Addr::new(Ipv4Addr::new(127, 0, 0, 1)),
         extra: ExtraNodes::new(),
       },
-      extra: ExtraNodes::new(),
     };
     let bytes = to_bytes(&obj).unwrap();
     eprintln!("bytes: {:02x?}", bytes);