remove deprecated of package io/ioutil (#13067)

Signed-off-by: ChengenH <[email protected]>

cl/antiquary/antiquary.go

@@ -18,8 +18,8 @@ package antiquary
 
 import (
 	"context"
-	"io/ioutil"
 	"math"
+	"os"
 	"strings"
 	"sync/atomic"
 	"time"
@@ -101,7 +101,7 @@ func NewAntiquary(ctx context.Context, blobStorage blob_storage.BlobStorage, gen
 // Check if the snapshot directory has beacon blocks files aka "contains beaconblock" and has a ".seg" extension over its first layer
 func doesSnapshotDirHaveBeaconBlocksFiles(snapshotDir string) bool {
 	// Iterate over the files in the snapshot directory
-	files, err := ioutil.ReadDir(snapshotDir)
+	files, err := os.ReadDir(snapshotDir)
 	if err != nil {
 		return false
 	}

erigon-lib/log/v3/bench_test.go

@@ -3,7 +3,7 @@ package log
 import (
 	"bytes"
 	"errors"
-	"io/ioutil"
+	"io"
 	"testing"
 	"time"
 )
@@ -134,7 +134,7 @@ func BenchmarkDescendant8(b *testing.B) {
 // (MIT License)
 func newLog15() Logger {
 	logger := New()
-	logger.SetHandler(StreamHandler(ioutil.Discard, JsonFormat()))
+	logger.SetHandler(StreamHandler(io.Discard, JsonFormat()))
 	return logger
 }