fixing test for upcoming mpir upgrade

- mpir is going to be upgraded up to 2.5.1 on windows

Author: weltling

ext/gmp/tests/022-win32.phpt

@@ -2,9 +2,6 @@
 gmp_gcdext() basic tests
 --SKIPIF--
 <?php if (!extension_loaded("gmp")) print "skip";
-if (substr(PHP_OS, 0, 3) == 'WIN') {
-    die('skip.. only for Non Windows Systems');
-}
 ?>
 --FILE--
 <?php

ext/gmp/tests/022.phpt

@@ -2,9 +2,6 @@
 gmp_nextprime()
 --SKIPIF--
 <?php if (!extension_loaded("gmp")) print "skip";
-if (substr(PHP_OS, 0, 3) == 'WIN') {
-    die('skip.. only for Non Windows Systems');
-}
 ?>
 --FILE--
 <?php