message: chore: Fix warnings in Handy protocol
  Fix unused manager warnings in The Handy protocol.
diff: @@ -14,7 +14,7 @@ use crate::{
  };
  use futures::future::{self, BoxFuture};
  use std::sync::Arc;
  -use tokio::sync::Mutex;
  +// use tokio::sync::Mutex;
  use prost::Message;
  mod protocomm {
  @@ -29,7 +29,7 @@ mod handyplug {
  pub struct TheHandy {
  name: String,
  message_attributes: DeviceMessageAttributesMap,
  - manager: Arc<Mutex<GenericCommandManager>>,
  + //_manager: Arc<Mutex<GenericCommandManager>>,
  stop_commands: Vec<ButtplugDeviceCommandMessageUnion>,
  }
  @@ -48,7 +48,7 @@ impl ButtplugProtocol for TheHandy {
  name: name.to_owned(),
  message_attributes,
  stop_commands: manager.get_stop_commands(),
  - manager: Arc::new(Mutex::new(manager)),
  + //_manager: Arc::new(Mutex::new(manager)),
  })
  }
  