diff --git a/common/bytes.go b/common/bytes.go
index 4998d1701..f9d82cd21 100644
--- a/common/bytes.go
+++ b/common/bytes.go
@@ -18,31 +18,9 @@
 package common
 
 import (
-	"bytes"
 	"encoding/hex"
 )
 
-// ToHex returns the hex representation of b, prefixed with '0x'.
-// For empty slices, the return value is "0x0".
-//
-// Deprecated: use hexutil.Encode instead.
-func ToHex(b []byte) string {
-	hex := Bytes2Hex(b)
-	if len(hex) == 0 {
-		hex = "0"
-	}
-	return "0x" + hex
-}
-
-// ToHexArray creates a array of hex-string based on []byte
-func ToHexArray(b [][]byte) []string {
-	r := make([]string, len(b))
-	for i := range b {
-		r[i] = ToHex(b[i])
-	}
-	return r
-}
-
 // FromHex returns the bytes represented by the hexadecimal string s.
 // s may be prefixed with "0x".
 func FromHex(s string) []byte {
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index cc17d3dd3..117a4f5de 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -1890,3 +1890,12 @@ func checkTxFee(gasPrice *big.Int, gas uint64, cap float64) error {
 	}
 	return nil
 }
+
+// toHexSlice creates a slice of hex-strings based on []byte.
+func toHexSlice(b [][]byte) []string {
+	r := make([]string, len(b))
+	for i := range b {
+		r[i] = hexutil.Encode(b[i])
+	}
+	return r
+}