windows.cygwinSetup: drop

Has been broken for a while. So just drop it.

pkgs/os-specific/windows/cygwin-setup/default.nix

@@ -1,72 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchcvs,
-  autoconf,
-  automake,
-  libtool,
-  flex,
-  bison,
-  pkg-config,
-  zlib,
-  bzip2,
-  xz,
-  libgcrypt,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "cygwin-setup";
-  version = "20131101";
-
-  src = fetchcvs {
-    cvsRoot = ":pserver:anoncvs@cygwin.com:/cvs/cygwin-apps";
-    module = "setup";
-    date = version;
-    sha256 = "024wxaaxkf7p1i78bh5xrsqmfz7ss2amigbfl2r5w9h87zqn9aq3";
-  };
-
-  nativeBuildInputs = [
-    autoconf
-    automake
-    libtool
-    flex
-    bison
-    pkg-config
-  ];
-
-  buildInputs =
-    let
-      mkStatic = lib.flip lib.overrideDerivation (o: {
-        dontDisableStatic = true;
-        configureFlags = lib.toList (o.configureFlags or [ ]) ++ [ "--enable-static" ];
-        buildInputs = map mkStatic (o.buildInputs or [ ]);
-        propagatedBuildInputs = map mkStatic (o.propagatedBuildInputs or [ ]);
-      });
-    in
-    map mkStatic [
-      zlib
-      bzip2
-      xz
-      libgcrypt
-    ];
-
-  configureFlags = [ "--disable-shared" ];
-
-  dontDisableStatic = true;
-
-  preConfigure = ''
-    autoreconf -vfi
-  '';
-
-  installPhase = ''
-    install -vD setup.exe "$out/bin/setup.exe"
-  '';
-
-  meta = {
-    homepage = "https://sourceware.org/cygwin-apps/setup.html";
-    description = "Tool for installing Cygwin";
-    license = lib.licenses.gpl2Plus;
-    platforms = lib.intersectLists lib.platforms.windows lib.platforms.x86;
-    teams = [ lib.teams.windows ];
-  };
-}

pkgs/os-specific/windows/default.nix

@@ -10,9 +10,6 @@
 
 lib.makeScope newScope (
   self: with self; {
-
-    cygwinSetup = callPackage ./cygwin-setup { };
-
     dlfcn = callPackage ./dlfcn { };
 
     w32api = callPackage ./w32api { };