Revert "gnu: Add python-iocapture."

This package was already in Guix since commit
dbcef44a.

This reverts commit 2cb4ee27.

gnu/packages/python-xyz.scm

@@ -17377,28 +17377,6 @@ (define-public python-pathtools
 for file systems paths.")
     (license license:expat)))
-(define-public python-iocapture
-  (package
-    (name "python-iocapture")
-    (version "0.1.2")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (pypi-uri "iocapture" version))
-        (sha256
-         (base32
-          "1s3ywdr0l3kfrrqi079iv16g0rp75akkvx0j07vx9p5w10c0wrw6"))))
-    (build-system python-build-system)
-    (native-inputs
-     `(("python-flexmock" ,python-flexmock)
-       ("python-pytest-cov" ,python-pytest-cov)
-       ("python-six" ,python-six)))
-    (home-page "https://github.com/oinume/iocapture")
-    (synopsis "stdout and stderr capture in Python")
-    (description "This package allows Python developpers to capture their standard
-output and standard error.")
-    (license license:expat)))
-
 (define-public python-watchdog
   (package
     (name "python-watchdog")