Remove HttpFuture alias

Author: faern

http/src/lib.rs

@@ -119,8 +119,6 @@ error_chain! {
 type CoreSender = mpsc::UnboundedSender<(Request, oneshot::Sender<Result<Vec<u8>>>)>;
 type CoreReceiver = mpsc::UnboundedReceiver<(Request, oneshot::Sender<Result<Vec<u8>>>)>;
 
-/// Future type returned from `HttpTransport`.
-pub type HttpFuture<T, E> = Box<Future<Item = T, Error = E> + Send>;
 
 /// The main struct of the HTTP transport implementation for
 /// [`jsonrpc_client_core`](../jsonrpc_client_core).
@@ -339,7 +337,7 @@ impl HttpHandle {
 }
 
 impl Transport for HttpHandle {
-    type Future = HttpFuture<Vec<u8>, Error>;
+    type Future = Box<Future<Item = Vec<u8>, Error = Self::Error> + Send>;
     type Error = Error;
 
     fn get_next_id(&mut self) -> u64 {