chore: clippy lint updates (#2914)

Co-authored-by: boquan-fang <178228860+boquan-fang@users.noreply.github.com>
Co-authored-by: Boquan Fang <boquanfang3@gmail.com>

Author: github-actions[bot]

dc/s2n-quic-dc-metrics/src/test.rs

@@ -1,8 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::counters_for_enum;
-
 // This has a very much shorter list than the actual enum - this is intentional, it tests that we
 // handle non_exhaustive correctly.
 counters_for_enum! {

quic/s2n-quic-core/src/buffer/reader/incremental.rs

@@ -6,7 +6,6 @@ use crate::{
         reader::{storage::Chunk, Reader, Storage},
         writer, Error,
     },
-    ensure,
     varint::VarInt,
 };
 

quic/s2n-quic-core/src/buffer/reader/storage/buf.rs

@@ -1,13 +1,9 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::{
-    assume,
-    buffer::{
-        reader::{storage::Chunk, Storage},
-        writer,
-    },
-    ensure,
+use crate::buffer::{
+    reader::{storage::Chunk, Storage},
+    writer,
 };
 use core::cmp::Ordering;
 

quic/s2n-quic-core/src/buffer/reader/storage/io_slice.rs

@@ -1,12 +1,9 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::{
-    assume,
-    buffer::{
-        reader::{storage::Chunk, Storage},
-        writer,
-    },
+use crate::buffer::{
+    reader::{storage::Chunk, Storage},
+    writer,
 };
 use core::{cmp::Ordering, ops::ControlFlow};
 

quic/s2n-quic-core/src/buffer/reader/storage/slice.rs

@@ -8,12 +8,9 @@
     unused_mut
 )]
 
-use crate::{
-    buffer::{
-        reader::{storage::Chunk, Storage},
-        writer,
-    },
-    ensure,
+use crate::buffer::{
+    reader::{storage::Chunk, Storage},
+    writer,
 };
 
 macro_rules! impl_slice {

quic/s2n-quic-core/src/buffer/writer/storage/limit.rs

@@ -1,10 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::{
-    assume,
-    buffer::{reader::storage::Chunk, writer::Storage},
-};
+use crate::buffer::{reader::storage::Chunk, writer::Storage};
 use bytes::{buf::UninitSlice, Bytes, BytesMut};
 
 /// An implementation that limits the number of bytes that can be written to the underlying storage

quic/s2n-quic-core/src/buffer/writer/storage/uninit_slice.rs

@@ -1,7 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::{assume, buffer::writer::Storage};
+use crate::buffer::writer::Storage;
 use bytes::buf::UninitSlice;
 
 impl Storage for &mut UninitSlice {

quic/s2n-quic-core/src/buffer/writer/storage/write_once.rs

@@ -1,10 +1,7 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::{
-    buffer::{reader::storage::Chunk, writer::Storage},
-    ensure,
-};
+use crate::buffer::{reader::storage::Chunk, writer::Storage};
 use bytes::{buf::UninitSlice, Bytes, BytesMut};
 
 /// Only allows a single write into the storage. After that, no more writes are allowed.