Mark xreadlines deprecated.  Don't use f.xreadlines() in test_iter.py.
diff --git a/Lib/test/test_iter.py b/Lib/test/test_iter.py
index 509ec01..62a8d02 100644
--- a/Lib/test/test_iter.py
+++ b/Lib/test/test_iter.py
@@ -269,7 +269,7 @@
         try:
             self.assertEqual(list(f), ["0\n", "1\n", "2\n", "3\n", "4\n"])
             f.seek(0, 0)
-            self.assertEqual(list(f.xreadlines()),
+            self.assertEqual(list(f),
                              ["0\n", "1\n", "2\n", "3\n", "4\n"])
         finally:
             f.close()
@@ -302,7 +302,7 @@
         try:
             self.assertEqual(tuple(f), ("0\n", "1\n", "2\n", "3\n", "4\n"))
             f.seek(0, 0)
-            self.assertEqual(tuple(f.xreadlines()),
+            self.assertEqual(tuple(f),
                              ("0\n", "1\n", "2\n", "3\n", "4\n"))
         finally:
             f.close()