remove Clone impl from Client

src/client.rs

@@ -25,7 +25,6 @@ static DEFAULT_USER_AGENT: &'static str = concat!(env!("CARGO_PKG_NAME"), "/", e
 ///
 /// The `Client` holds a connection pool internally, so it is advised that
 /// you create one and reuse it.
-#[derive(Clone)]
 pub struct Client {
     inner: Arc<ClientRef>,  //::hyper::Client,
 }