misc: Remove redundant "use" imports

With the nightly toolchain (2024-02-18) cargo check will flag up
redundant imports either because they are pulled in by the prelude on
earlier match.

Remove those redundant imports.

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>

block/src/lib.rs

@@ -41,7 +41,6 @@ use smallvec::SmallVec;
 use std::alloc::{alloc_zeroed, dealloc, Layout};
 use std::cmp;
 use std::collections::VecDeque;
-use std::convert::TryInto;
 use std::fmt::Debug;
 use std::fs::File;
 use std::io::{self, IoSlice, IoSliceMut, Read, Seek, SeekFrom, Write};

block/src/qcow/mod.rs

@@ -1822,7 +1822,6 @@ pub fn detect_image_type(file: &mut RawFile) -> Result<ImageType> {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use std::io::{Read, Seek, SeekFrom, Write};
     use vmm_sys_util::tempfile::TempFile;
     use vmm_sys_util::write_zeroes::WriteZeroes;
 

block/src/qcow/raw_file.rs

@@ -11,7 +11,6 @@
 use crate::BlockBackend;
 use libc::c_void;
 use std::alloc::{alloc_zeroed, dealloc, Layout};
-use std::convert::TryInto;
 use std::fs::{File, Metadata};
 use std::io::{self, Read, Seek, SeekFrom, Write};
 use std::os::unix::io::{AsRawFd, RawFd};

block/src/vhd.rs

@@ -3,7 +3,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use crate::{read_aligned_block_size, DiskTopology};
-use std::convert::TryInto;
 use std::fs::File;
 use std::io::{Seek, SeekFrom};
 

block/src/vhdx/vhdx_header.rs

@@ -7,7 +7,6 @@ extern crate log;
 use byteorder::{ByteOrder, LittleEndian, ReadBytesExt};
 use remain::sorted;
 use std::collections::btree_map::BTreeMap;
-use std::convert::TryInto;
 use std::fs::File;
 use std::io::{self, Read, Seek, SeekFrom, Write};
 use std::mem::size_of;