remove now-unsed sszHash function (#56)

core/types/hashing.go

@@ -18,15 +18,12 @@ package types
 
 import (
 	"bytes"
-	"crypto/sha256"
 	"sync"
 
-	"github.com/protolambda/ztyp/codec"
-	"github.com/protolambda/ztyp/tree"
-
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/protolambda/ztyp/tree"
 	"golang.org/x/crypto/sha3"
 )
 
@@ -128,14 +125,3 @@ func DeriveSha(list DerivableList, hasher TrieHasher) common.Hash {
 	}
 	return hasher.Hash()
 }
-
-// sszHash returns the hash ot the raw serialized ssz-container (i.e. without merkelization)
-func sszHash(c codec.Serializable) ([32]byte, error) {
-	sha := sha256.New()
-	if err := c.Serialize(codec.NewEncodingWriter(sha)); err != nil {
-		return [32]byte{}, err
-	}
-	var sum [32]byte
-	copy(sum[:], sha.Sum(nil))
-	return sum, nil
-}