sax|etree: Simplify Expat version guard where simplifiable

Idea by Matěj Cepl

Author: hartwork

Lib/test/test_sax.py

@@ -1215,10 +1215,10 @@ def test_expat_incremental_reset(self):
 
         self.assertEqual(result.getvalue(), start + b"<doc>text</doc>")
 
+    @unittest.skipIf(pyexpat.version_info < (2, 6, 0),
+                     f'Expat {pyexpat.version_info} does not '
+                     'support reparse deferral')
     def test_flush_reparse_deferral_enabled(self):
-        if pyexpat.version_info < (2, 6, 0):
-            self.skipTest(f'Expat {pyexpat.version_info} does not support reparse deferral')
-
         result = BytesIO()
         xmlgen = XMLGenerator(result)
         parser = create_parser()

Lib/test/test_xml_etree.py

@@ -1707,11 +1707,10 @@ def test_unknown_event(self):
         with self.assertRaises(ValueError):
             ET.XMLPullParser(events=('start', 'end', 'bogus'))
 
+    @unittest.skipIf(pyexpat.version_info < (2, 6, 0),
+                     f'Expat {pyexpat.version_info} does not '
+                     'support reparse deferral')
     def test_flush_reparse_deferral_enabled(self):
-        if pyexpat.version_info < (2, 6, 0):
-            self.skipTest(f'Expat {pyexpat.version_info} does not '
-                          'support reparse deferral')
-
         parser = ET.XMLPullParser(events=('start', 'end'))
 
         for chunk in ("<doc", ">"):