Remove some logging that could result in an information leak.

src/org/thoughtcrime/securesms/protocol/WirePrefix.java

@@ -16,14 +16,12 @@
  */
 package org.thoughtcrime.securesms.protocol;
 
+import org.thoughtcrime.securesms.util.Base64;
+
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 
-import org.thoughtcrime.securesms.util.Base64;
-
-import android.util.Log;
-
 /**
  * Calculates prefixes that identify a message as
  * being part of an encrypted session.  The idea was to
@@ -64,15 +62,10 @@ public abstract class WirePrefix {
     String prefix           = message.substring(0, PREFIX_SIZE);
     message                 = message.substring(PREFIX_SIZE);
 
-    Log.w("Prefix", "Calculating on message: " + message + "**");
-		
     String calculatedPrefix = calculatePrefix((prefixType + message).getBytes(), PREFIX_BYTES);
 
     assert(calculatedPrefix.length() == PREFIX_SIZE);
 
-    Log.w("Prefix", "Received prefix: " + prefix);
-    Log.w("Prefix", "Calculated prefix: " + calculatedPrefix);
-		
     return prefix.equals(calculatedPrefix);
   }