gnu: r-foreign: Remove duplicate recipe.

* gnu/packages/statistics.scm (r-foreign): Remove duplicate recipe.

gnu/packages/statistics.scm

@@ -1602,26 +1602,6 @@ It is based on the methods described in Kaufman and Rousseeuw (1990) \"Finding
 Groups in Data\".")
     (license license:gpl2+)))
 
-(define-public r-foreign
-  (package
-    (name "r-foreign")
-    (version "0.8-67")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (cran-uri "foreign" version))
-       (sha256
-        (base32
-         "1mcrm2pydimbyjhkrw5h380bifj1jhwzifph1xgh90asf3lvd1xd"))))
-    (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/foreign")
-    (synopsis "Read data stored by other statistics software in R")
-    (description
-     "This package provides functions for reading and writing data stored by
-some versions of Epi Info, Minitab, S, SAS, SPSS, Stata, Systat and Weka, and
-for reading and writing some dBase files.")
-    (license license:gpl2+)))
-
 (define-public r-formula
   (package
     (name "r-formula")