remove import

src/kernel/src/errno.rs

@@ -1,7 +1,6 @@
 use std::convert::Infallible;
 use std::error::Error;
 use std::num::NonZeroI32;
-use thiserror::Error;
 
 // This file contains errno used in a PS4 system. The value of each errno must be the same as the
 // PS4.

src/kernel/src/fs/dev/mod.rs

@@ -9,7 +9,6 @@ use crate::errno::{Errno, EEXIST, ENOENT, EOPNOTSUPP};
 use crate::ucred::{Gid, Ucred, Uid};
 use bitflags::bitflags;
 use macros::Errno;
-use std::num::NonZeroI32;
 use std::sync::atomic::{AtomicU32, AtomicUsize, Ordering};
 use std::sync::{Arc, Mutex, RwLock};
 use thiserror::Error;

src/kernel/src/fs/host/mod.rs

@@ -9,7 +9,6 @@ use param::Param;
 use std::collections::HashMap;
 use std::fs::create_dir;
 use std::io::ErrorKind;
-use std::num::NonZeroI32;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Weak};
 use thiserror::Error;

src/kernel/src/fs/host/vnode.rs

@@ -6,7 +6,6 @@ use crate::process::VThread;
 use crate::ucred::{Gid, Uid};
 use macros::Errno;
 use std::borrow::Cow;
-use std::num::NonZeroI32;
 use std::sync::Arc;
 use thiserror::Error;
 

src/kernel/src/fs/mod.rs

@@ -10,7 +10,7 @@ use macros::vpath;
 use macros::Errno;
 use param::Param;
 use std::fmt::{Display, Formatter};
-use std::num::{NonZeroI32, TryFromIntError};
+use std::num::TryFromIntError;
 use std::path::PathBuf;
 use std::sync::Arc;
 use thiserror::Error;

src/kernel/src/fs/null/vnode.rs

@@ -4,7 +4,7 @@ use crate::{
     process::VThread,
 };
 use macros::Errno;
-use std::{num::NonZeroI32, sync::Arc};
+use std::sync::Arc;
 use thiserror::Error;
 
 #[derive(Debug)]

src/kernel/src/shm/mod.rs

@@ -12,7 +12,7 @@ use crate::{
     syscalls::{SysErr, SysIn, SysOut, Syscalls},
     ucred::{Gid, Ucred, Uid},
 };
-use std::{convert::Infallible, num::NonZeroI32, sync::Arc};
+use std::{convert::Infallible, sync::Arc};
 
 pub struct SharedMemoryManager {
     mm: Arc<MemoryManager>,