Fixed IPV6 regex https://git.ispconfig.org/ispconfig/ispconfig3/issues/4002

Pascal Dreissen

2016-07-05 fbfdc438eaf2a70d5fefda74c919edc76e82d0fd

 interface/web/sites/database_edit.php

@@ -262,7 +262,6 @@
               }
               unset($tmp);
            }

         }
      } else {
         // check if client of database parent domain is client of db user!