gnu: python-s3transfer: Reduce closure size.

* gnu/packages/python-web.scm (python-s3transfer)
[propagated-inputs]: Remove python-urllib3.
[native-inputs]: Remove python-docutils, python-mock, python-nose, and
python-wheel.

Change-Id: I041e5da66b356a8a54f942ac710cccd4f4098ed4

gnu/packages/python-web.scm

@@ -6574,16 +6574,11 @@ S3.")
               ;; Tests require networking.
               "--ignore" "tests/integration")))
     (native-inputs
-     (list python-docutils
-           python-mock
-           python-nose
-           python-pytest
+     (list python-pytest
            python-pytest-xdist
-           python-setuptools
-           python-wheel))
+           python-setuptools))
     (propagated-inputs
-     (list python-botocore
-           python-urllib3))
+     (list python-botocore))
     (home-page "https://github.com/boto/s3transfer")
     (synopsis "Amazon S3 Transfer Manager")
     (description