removes commented out code

Author: kmindi

src/main/java/com/cryptoexamples/java/ExampleStringEncryptionKeyBasedInOneMethod.java

@@ -54,7 +54,6 @@ public static void main(String[] args) {
 
       // DECRYPTION
       cipher.init(Cipher.DECRYPT_MODE, key, spec);
-      //cipher.updateAAD(aad);
       byte[] decryptedCipher = cipher.doFinal(Base64.getDecoder().decode(cipherText));
       String decryptedCipherText = new String(decryptedCipher, StandardCharsets.UTF_8);