cargo: remove termios crate

Author: manio

Cargo.lock

@@ -26,5 +26,4 @@ influxdb = { version = "0.3.0", features = ["derive"] }
 chrono = { version = "0.4.11", features = ["serde"] }
 tokio-compat-02 = "0.1"
 humantime = "2.0.1"
-termios = "0.3.3"
 tokio-modbus = { version = "0.5.2", default-features = false, features = ["tcp"] }