gnu: python2-requests-mock: Remove package.

* gnu/packages/python-xyz.scm (python2-requests-mock): Delete.

gnu/packages/python-web.scm

@@ -2517,17 +2517,8 @@ (define-public python-requests-mock
     (description
       "This module provides a building block to stub out the HTTP requests
 portions of your testing code.")
-    (properties `((python2-variant . ,(delay python2-requests-mock))))
     (license license:asl2.0)))
 
-(define-public python2-requests-mock
-  (package (inherit (package-with-python2
-                     (strip-python2-variant python-requests-mock)))
-           (arguments
-            `(#:python ,python-2
-              ;; FIXME: 'subunit.run discover: error: no such option: --list'
-              #:tests? #f))))
-
 (define-public python-requests-toolbelt
   (package
     (name "python-requests-toolbelt")