R: delete obsolete version 2.x from Nixpkgs

pkgs/development/interpreters/r-lang/default.nix

@@ -1,37 +0,0 @@
-{ stdenv, fetchurl, readline, perl, gfortran, libX11, libpng, libXt, zlib
-, withBioconductor ? false
-}:
-
-stdenv.mkDerivation {
-  name = "r-lang";
-  version = "2.12.0";
-  src = fetchurl {
-    url = http://cran.r-project.org/src/base/R-2/R-2.12.0.tar.gz;
-    sha256 = "93d72d845b01c6cd00e58f04b5e78fd6c83de96a8620505ad2a016772af02179";
-  };
-
-  bioconductor = if withBioconductor then import ../development/libraries/science/biology/bioconductor { inherit fetchurl stdenv readline; } else null;
-
-  postUnpack = ''
-    gunzip R-2.12.0/src/library/Recommended/Matrix_0.999375-44.tar.gz
-    tar --file=R-2.12.0/src/library/Recommended/Matrix_0.999375-44.tar --delete Matrix/src/dummy.cpp
-    gzip R-2.12.0/src/library/Recommended/Matrix_0.999375-44.tar
-  '';
-
-  buildInputs = [readline perl gfortran libpng libX11 libXt zlib];
-  configureFlags = ["--enable-R-shlib"] ;
-
-  meta = {
-    description = "R is a language and environment for statistical computing and graphics";
-    license     = "GPL2";
-    homepage    = http://www.r-project.org/;
-    longDescription = ''
-      R is a language and environment for statistical computing and
-      graphics. It is a GNU project which is similar to the S language.
-      R provides a wide variety of statistical (linear and nonlinear
-      modelling, classical statistical tests, time-series analysis,
-      classification, clustering, ...) and graphical techniques, and is
-      highly extensible.
-    '';
-  };
-}

pkgs/top-level/all-packages.nix

@@ -3154,10 +3154,6 @@ let
 
   rubySqlite3 = callPackage ../development/ruby-modules/sqlite3 { };
 
-  rLang = callPackage ../development/interpreters/r-lang {
-    withBioconductor = config.rLang.withBioconductor or false;
-  };
-
   rubygemsFun = ruby: builderDefsPackage (import ../development/interpreters/ruby/rubygems.nix) {
     inherit ruby makeWrapper;
   };