gnu: Remove python-paste.

Fails to build, no users in Guix.

Note from upstream:

  Paste is in maintenance mode and recently moved from bitbucket to
  github. Patches are accepted to keep it on life support, but for the
  most part, please consider using other options.

Fixes: guix/guix#3229
* gnu/packages/python-web.scm (python-paste): Delete variable.

Change-Id: If4ee8da2a0c49f40676e32a934a6cfff81f3522d

gnu/packages/python-web.scm

@@ -8544,30 +8544,6 @@ package from WTForms.  The package has been renamed to
 @code{wtforms.ext.sqlalchemy} did.")
     (license license:bsd-3)))
 
-(define-public python-paste
-  (package
-    (name "python-paste")
-    (version "3.10.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (pypi-uri "paste" version))
-       (sha256
-        (base32
-         "0jjyl39r5ncx98rwi855x71qrwvwm59idgn7q0c7m2jyb8314g8w"))))
-    (build-system pyproject-build-system)
-    (native-inputs
-     (list python-pytest
-           python-setuptools
-           python-wheel))
-    (home-page "https://pythonpaste.readthedocs.io/")
-    (synopsis "Python web development tools, focusing on WSGI")
-    (description
-     "Paste provides a variety of web development tools and middleware which
-can be nested together to build web applications.  Paste's design closely
-follows ideas flowing from WSGI (Web Standard Gateway Interface).")
-    (license license:expat)))
-
 (define-public python-urlgrabber
   (package
     (name "python-urlgrabber")