Remove unused dependency

Author: tmerr

Cargo.toml

@@ -10,5 +10,4 @@ repository = "https://github.com/tmerr/i3ipc-rs"
 unix_socket = "0.4.5"
 byteorder = "0.3"
 log = "0.3.7"
-serde = "0.6.0"
 serde_json = "0.6.0"

src/lib.rs

@@ -19,7 +19,6 @@ extern crate unix_socket;
 extern crate byteorder;
 #[macro_use]
 extern crate log;
-extern crate serde;
 extern crate serde_json;
 
 use std::{io, fmt, process};