giving up on HHVM unit tests for now, will open an issue for it

.travis.yml

@@ -4,7 +4,6 @@ php:
   - 5.5
   - 5.6
   - 7.0
-  - hhvm
 
 before_script:
   - composer install -n

tst/bootstrap.php

@@ -1,6 +1,5 @@
 <?php
 error_reporting( E_ALL | E_STRICT );
-ini_set('hhvm.xenon.period', '0');
 
 // change this, if your php files and data is outside of your webservers document root
 if (!defined('PUBLIC_PATH')) define('PUBLIC_PATH', '..');

tst/zerobin.php

@@ -187,7 +187,6 @@ class zerobinTest extends PHPUnit_Framework_TestCase
         $_SERVER['HTTP_X_REQUESTED_WITH'] = 'JSONHttpRequest';
         $_SERVER['REQUEST_METHOD'] = 'POST';
         $_SERVER['REMOTE_ADDR'] = '::1';
-        trafficlimiter::setLimit(30);
         trafficlimiter::canPass();
         ob_start();
         new zerobin;