reverted hhvm requiremend from composer

Marc Bennewitz · Marc Bennewitz · commit 61d8706e1cf7 · 2014-05-17T13:57:53.000+02:00
... as it excludes each other
diff --git a/composer.json b/composer.json
@@ -22,7 +22,6 @@
     "license": "BSD-3-Clause",
     "require": {
         "php":            ">=5.3",
-        "hhvm":           ">=3.0",
         "ext-reflection": "*"
     },
     "require-dev": {
