Remove the /* no condition */ comments from Punycode.php

[adamziel]

Paul reported this issue on the WordPress support forums: [WordPress Importer] Version 0.9.1 trips anti-malware

Version 0.9.1 is tripping up our anti-malware scanner because the following file…

php-toolkit/DataLiberation/vendor-patched/rowbot/punycode/src/Punycode.php
…uses a code obfuscation technique. It’s putting comments inside a for statement, like this:

for ( $k = self::BASE; /* no condition */; $k += self::BASE )
Putting a comment in there is a technique used by malware to hide nasties.

Request: Can you please remove these comments from your patched Punycode.php file?

This PR does just that and removes those comments. Thank you for the ping @dd32

As a follow-up item, let's remove them in the php-toolkit repo as well.