--- a/services/sync/modules/util.js
+++ b/services/sync/modules/util.js
@@ -551,20 +551,16 @@ let Utils = {
     let iterations = Math.ceil(len/BLOCKSIZE);
     for (let i = 0; i < iterations; i++) {
       Tn = Utils.digestBytes(Tn + info + String.fromCharCode(i + 1), h);
       T += Tn;
     }
     return T.slice(0, len);
   },
 
-  byteArrayToString: function byteArrayToString(bytes) {
-    return [String.fromCharCode(byte) for each (byte in bytes)].join("");
-  },
-  
   /**
    * PBKDF2 implementation in Javascript.
    * 
    * The arguments to this function correspond to items in 
    * PKCS #5, v2.0 pp. 9-10 
    * 
    * P: the passphrase, an octet string:              e.g., "secret phrase"
    * S: the salt, an octet string:                    e.g., "DNXPzPpiwn"