Small cleanup

src/device_manager.rs

@@ -1,5 +1,5 @@
 use std::collections::HashMap;
-use std::ops::{Deref, DerefMut};
+use std::ops::Deref;
 use std::pin::Pin;
 use std::sync::Arc;
 
@@ -33,12 +33,6 @@ impl Deref for WrappedDevice {
     }
 }
 
-impl DerefMut for WrappedDevice {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
 impl mlua::UserData for WrappedDevice {
     fn add_methods<'lua, M: mlua::prelude::LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
         methods.add_async_method("get_id", |_lua, this, _: ()| async { Ok(this.get_id()) });