dylan: Remove old gwydion-dylan package.

The Gywdion Dylan compiler that was packaged here is old and this
package no longer builds. The Gwydion Dylan compiler is no longer
maintained, and has been replaced by the Open Dylan compiler which
is already packaged in Nix (opendylan).

pkgs/development/compilers/gwydion-dylan/binary-builder.sh

@@ -1,9 +0,0 @@
-source $stdenv/setup
-
-set -e
-
-mkdir -p $out
-cd $out
-tar zxvf $src
-mv ./usr/local/* .
-rm -rf ./usr

pkgs/development/compilers/gwydion-dylan/binary.nix

@@ -1,10 +0,0 @@
-{stdenv, fetchurl}:
-
-stdenv.mkDerivation {
-  name = "binary-gwydion-dylan-2.4.0";
-  builder = ./binary-builder.sh;
-  src = fetchurl {
-    url = http://www.gwydiondylan.org/downloads/binaries/linux/x86/tar/gwydion-dylan-2.4.0-x86-linux.tar.gz;
-    md5 = "52643ad51a455d21fd4d5bf82d98914c";
-  };
-}

pkgs/development/compilers/gwydion-dylan/builder.sh

@@ -1,8 +0,0 @@
-source $stdenv/setup
-
-export DYLANDIR=$dylan
-export DYLANPATH=$dylan/lib/dylan/2.4.0/x86-linux-gcc
-configureFlags="--with-existing-runtime=$dylan/lib/dylan/2.4.0/x86-linux-gcc"
-export LD_LIBRARY_PATH="$dylan/lib/dylan/2.4.0/x86-linux-gcc:$LD_LIBRARY_PATH:$boehmgc/lib"
-
-genericBuild

pkgs/development/compilers/gwydion-dylan/default.nix

@@ -1,13 +0,0 @@
-{stdenv, fetchurl, dylan, boehmgc, perl, flex, yacc, readline}:
-
-stdenv.mkDerivation {
-  name = "gwydion-dylan-2.4.0";
-  builder = ./builder.sh;
-  src = fetchurl {
-    url = http://www.gwydiondylan.org/downloads/src/tar/gwydion-dylan-2.4.0.tar.gz;
-    md5 = "7ed180bf4ef11e8e8da3bd78b45477a8";
-  };
-
-  inherit boehmgc dylan perl;
-  buildInputs = [boehmgc dylan perl flex yacc readline];
-}

pkgs/top-level/all-packages.nix

@@ -2730,10 +2730,6 @@ let
   cython = pythonPackages.cython;
   cython3 = python3Packages.cython;
 
-  dylan = callPackage ../development/compilers/gwydion-dylan {
-    dylan = callPackage ../development/compilers/gwydion-dylan/binary.nix {  };
-  };
-
   ecl = callPackage ../development/compilers/ecl { };
 
   eql = callPackage ../development/compilers/eql {};