[#1684] *: Fix linter warnings

Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>

cmd/neofs-adm/internal/modules/morph/initialize_test.go

@@ -2,7 +2,6 @@ package morph
 
 import (
 	"encoding/hex"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -56,7 +55,7 @@ func TestInitialize(t *testing.T) {
 	require.NoError(t, err)
 
 	protoPath := filepath.Join(walletDir, "proto.yml")
-	require.NoError(t, ioutil.WriteFile(protoPath, data, os.ModePerm))
+	require.NoError(t, os.WriteFile(protoPath, data, os.ModePerm))
 
 	v.Set(protoConfigPath, protoPath)
 	// Set to the path or remove the next statement to download from the network.

cmd/neofs-cli/modules/bearer/create.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"time"
 
 	internalclient "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/client"
@@ -103,7 +103,7 @@ func createToken(cmd *cobra.Command, _ []string) {
 	eaclPath, _ := cmd.Flags().GetString(eaclFlag)
 	if eaclPath != "" {
 		table := eaclSDK.NewTable()
-		raw, err := ioutil.ReadFile(eaclPath)
+		raw, err := os.ReadFile(eaclPath)
 		common.ExitOnErr(cmd, "can't read extended ACL file: %w", err)
 		common.ExitOnErr(cmd, "can't parse extended ACL: %w", json.Unmarshal(raw, table))
 		b.SetEACLTable(*table)
@@ -120,6 +120,6 @@ func createToken(cmd *cobra.Command, _ []string) {
 	}
 
 	out, _ := cmd.Flags().GetString(outFlag)
-	err = ioutil.WriteFile(out, data, 0644)
+	err = os.WriteFile(out, data, 0644)
 	common.ExitOnErr(cmd, "can't write token to file: %w", err)
 }

cmd/neofs-cli/modules/session/create.go

@@ -2,7 +2,7 @@ package session
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"github.com/google/uuid"
 	internalclient "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/client"
@@ -77,7 +77,7 @@ func createSession(cmd *cobra.Command, _ []string) {
 	}
 
 	filename, _ := cmd.Flags().GetString(outFlag)
-	err = ioutil.WriteFile(filename, data, 0644)
+	err = os.WriteFile(filename, data, 0644)
 	common.ExitOnErr(cmd, "can't write token to file: %w", err)
 }
 

cmd/neofs-cli/modules/session/util.go

@@ -2,7 +2,7 @@ package session
 
 import (
 	"crypto/ecdsa"
-	"io/ioutil"
+	"os"
 
 	internalclient "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/client"
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/common"
@@ -28,7 +28,7 @@ func Prepare(cmd *cobra.Command, cnr cid.ID, obj *oid.ID, key *ecdsa.PrivateKey,
 
 	var tok session.Object
 	if tokenPath, _ := cmd.Flags().GetString(commonflags.SessionToken); len(tokenPath) != 0 {
-		data, err := ioutil.ReadFile(tokenPath)
+		data, err := os.ReadFile(tokenPath)
 		common.ExitOnErr(cmd, "can't read session token: %w", err)
 
 		if err := tok.Unmarshal(data); err != nil {

pkg/util/gendoc/gendoc.go

@@ -3,7 +3,6 @@ package gendoc
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -53,7 +52,7 @@ In this case there is a number of helper functions which can be used:
 			}
 
 			if len(args) == 2 {
-				data, err := ioutil.ReadFile(args[1])
+				data, err := os.ReadFile(args[1])
 				if err != nil {
 					return fmt.Errorf("can't read the template '%s': %w", args[1], err)
 				}