remove proxy handling in favor of hyper-proxy crate

src/lib.rs

@@ -132,6 +132,7 @@ extern crate bytes;
 #[macro_use]
 extern crate futures;
 extern crate hyper;
+extern crate hyper_proxy;
 extern crate hyper_tls;
 #[macro_use]
 extern crate log;
@@ -170,7 +171,6 @@ pub use self::tls::{Certificate, Identity};
 mod error;
 
 mod async_impl;
-mod connect;
 mod body;
 mod client;
 mod into_url;