Refs #23943 -- Removed an invalid generic_views test.

Using PUT as a method for the form element is no longer supported
as described in the ticket.

tests/generic_views/test_edit.py

 from __future__ import unicode_literals
 
-from unittest import expectedFailure
 import warnings
 
 from django.core.exceptions import ImproperlyConfigured
@@ -242,26 +241,6 @@ class UpdateViewTests(TestCase):
         self.assertRedirects(res, 'http://testserver/list/authors/')
         self.assertQuerysetEqual(Author.objects.all(), ['<Author: Randall Munroe (xkcd)>'])
 
-    @expectedFailure
-    def test_update_put(self):
-        a = Author.objects.create(
-            name='Randall Munroe',
-            slug='randall-munroe',
-        )
-        res = self.client.get('/edit/author/%d/update/' % a.pk)
-        self.assertEqual(res.status_code, 200)
-        self.assertTemplateUsed(res, 'generic_views/author_form.html')
-
-        res = self.client.put('/edit/author/%d/update/' % a.pk,
-                        {'name': 'Randall Munroe (author of xkcd)', 'slug': 'randall-munroe'})
-        # Here is the expected failure. PUT data are not processed in any special
-        # way by django. So the request will equal to a POST without data, hence
-        # the form will be invalid and redisplayed with errors (status code 200).
-        # See also #12635
-        self.assertEqual(res.status_code, 302)
-        self.assertRedirects(res, 'http://testserver/list/authors/')
-        self.assertQuerysetEqual(Author.objects.all(), ['<Author: Randall Munroe (author of xkcd)>'])
-
     def test_update_invalid(self):
         a = Author.objects.create(
             name='Randall Munroe',