Skip XincludeTest entirely instead of just ignoring failures, because it may…

Skip XincludeTest entirely instead of just ignoring failures, because it may segfault, depending on the order of running tests

Lib/test/test_xml_etree.py

@@ -2011,8 +2011,8 @@ class TreeBuilderTest(unittest.TestCase):
              'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'))
 
 
+@unittest.skip('Unstable due to module monkeypatching')
 class XincludeTest(unittest.TestCase):
-    @unittest.expectedFailure
     def test_xinclude_default(self):
         from xml.etree import ElementInclude
         doc = xinclude_loader('default.xml')