gnu: python-httplib2: Reduce closure size.

* gnu/packages/python-web.scm (python-httplib2):
  [native-inputs]: Remove python-flake8, python-pytest-forked,
  python-pytest-xdist, python-six, and python-wheel; add
  python-pyparsing.

Change-Id: Ic1923970dab0573cea3d3afb77f1c658ceacab2c

gnu/packages/python-web.scm

@@ -2488,18 +2488,14 @@ over a different origin than that of the web application.")
                  (("==") ">=")))))))
     (native-inputs
      (list python-cryptography
-           python-flake8
            python-future
            python-mock
+           python-pyparsing
            python-pytest
            python-pytest-cov
-           python-pytest-forked
            python-pytest-randomly
            python-pytest-timeout
-           python-pytest-xdist
-           python-six
-           python-setuptools
-           python-wheel))
+           python-setuptools))
     (home-page "https://github.com/httplib2/httplib2")
     (synopsis "Comprehensive HTTP client library")
     (description