runtime-rs: delete some allow(dead_code) attributes

Some #![allow(dead_code)]s and code are not needed indeed.

Fixes: #5164

Signed-off-by: Bin Liu <bin@hyper.sh>

src/runtime-rs/crates/resource/src/rootfs/mod.rs

@@ -11,7 +11,6 @@ use std::{sync::Arc, vec::Vec};
 use anyhow::{anyhow, Context, Result};
 use async_trait::async_trait;
 use kata_types::mount::Mount;
-use nix::sys::stat::{self, SFlag};
 use tokio::sync::RwLock;
 
 use crate::share_fs::ShareFs;
@@ -98,24 +97,3 @@ impl RootFsResource {
 fn is_single_layer_rootfs(rootfs_mounts: &[Mount]) -> bool {
     rootfs_mounts.len() == 1
 }
-
-#[allow(dead_code)]
-fn get_block_device(file_path: &str) -> Option<u64> {
-    if file_path.is_empty() {
-        return None;
-    }
-
-    match stat::stat(file_path) {
-        Ok(fstat) => {
-            if SFlag::from_bits_truncate(fstat.st_mode) == SFlag::S_IFBLK {
-                return Some(fstat.st_rdev);
-            }
-        }
-        Err(err) => {
-            error!(sl!(), "failed to stat for {} {:?}", file_path, err);
-            return None;
-        }
-    };
-
-    None
-}

src/runtime-rs/crates/shim/src/config.rs.in

@@ -7,8 +7,6 @@
 // WARNING: This file is auto-generated - DO NOT EDIT!
 //
 
-#![allow(dead_code)]
-
 pub const PROJECT_NAME: &str = "@PROJECT_NAME@";
 pub const RUNTIME_VERSION: &str = "@RUNTIME_VERSION@";
 pub const RUNTIME_VERSION_COMMIT: &str = "@VERSION_COMMIT@";