Delete unused variable.
This is no longer required because the body reader methods have access
to the version via the codec state.
@@ -284,7 +284,6 @@ impl Decoder for Codec {
);
let body_reader = Cursor::new(&body);
- let v = self.builder.version;
match &command {
b"version\0\0\0\0\0" => self.read_version(body_reader),
b"verack\0\0\0\0\0\0" => self.read_verack(body_reader),
