No longer needed by Unit test code

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1744569 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/main/java/org/apache/commons/codec/digest/DigestUtils.java

@@ -967,7 +967,7 @@ public static boolean isAvailable(String messageDigestAlgorithm) {
 
     private final MessageDigest messageDigest;
 
-    DigestUtils() {
+    private DigestUtils() {
         this.messageDigest = null;
     }
 

src/main/java/org/apache/commons/codec/digest/HmacUtils.java

@@ -854,7 +854,7 @@ public static Mac updateHmac(final Mac mac, final String valueToDigest) {
         return mac;
     }
 
-    HmacUtils() { // TODO why does test code try to instantiate this?
+    private HmacUtils() {
         this(null);
     }