remove unused imports in main.rs

src/main.rs

@@ -4,13 +4,7 @@
 // This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
 // See LICENSE file in the project root for full license text.
 
-use std::{
-    env,
-    fs::File,
-    io::{self, Read},
-    sync::Arc,
-    time::Duration,
-};
+use std::{env, sync::Arc, time::Duration};
 
 use trve::{
     consts::{Byte, DWord, HWord, Word},