all: replace io/ioutil with io and os package

Signed-off-by: cui fliter <[email protected]>

Author: cuishuang

openpgp/packet/opaque.go

@@ -6,8 +6,9 @@ package packet
 
 import (
 	"bytes"
-	"golang.org/x/crypto/openpgp/errors"
 	"io"
+
+	"golang.org/x/crypto/openpgp/errors"
 )
 
 // OpaquePacket represents an OpenPGP packet as raw, unparsed data. This is

ssh/cipher.go

@@ -13,10 +13,11 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"golang.org/x/crypto/chacha20"
-	"golang.org/x/crypto/internal/poly1305"
 	"hash"
 	"io"
+
+	"golang.org/x/crypto/chacha20"
+	"golang.org/x/crypto/internal/poly1305"
 )
 
 const (