gnu: Remove unused python-flake8-2.2.4.

* gnu/packages/python.scm (python-flake8-2.2.4): Remove variable.

gnu/packages/python.scm

@@ -6521,40 +6521,6 @@ complexity of Python source code.")
 (define-public python2-flake8
   (package-with-python2 python-flake8))
 
-;; This will only be needed by the python-hacking package and will not be
-;; necessary once python-hacking > 0.10.2 is released.
-(define-public python-flake8-2.2.4
-  (package (inherit python-flake8)
-    (propagated-inputs
-      `(("python-pep8" ,python-pep8-1.5.7)
-        ("python-pyflakes" ,python-pyflakes-0.8.1)
-        ("python-mccabe" ,python-mccabe-0.2.1)))
-    (native-inputs
-      `(("python-mock" ,python-mock)
-        ("python-nose" ,python-nose)))
-    (version "2.2.4")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (pypi-uri "flake8" version))
-        (sha256
-          (base32
-            "1r9wsry4va45h1rck5hxd3vzsg2q3y6lnl6pym1bxvz8ry19jwx8"))
-        (modules '((guix build utils)))
-        (snippet
-         '(begin
-            ;; Remove pre-compiled .pyc files from source.
-            (for-each delete-file-recursively
-                      (find-files "." "__pycache__" #:directories? #t))
-            (for-each delete-file (find-files "." "\\.pyc$"))
-            #t))))
-    (arguments
-     ;; XXX Fails with Python 3.5.
-     '(#:tests? #f))))
-
-(define-public python2-flake8-2.2.4
-  (package-with-python2 python-flake8-2.2.4))
-
 (define-public python-flake8-polyfill
   (package
     (name "python-flake8-polyfill")