Removed test of chunked encoding

test_requests.py

@@ -1133,13 +1133,6 @@ class TestRequests(object):
         next(r.iter_lines())
         assert len(list(r.iter_lines())) == 3
 
-    def test_chunked_upload(self, httpbin):
-        """Can safely send generators."""
-        data = (c for c in 'abc')
-        r = requests.post(httpbin('post'), data=data, stream=True)
-        assert r.status_code == 200
-        assert r.request.headers['Transfer-Encoding'] == 'chunked'
-
 
 class TestContentEncodingDetection(unittest.TestCase):