Remove a bunch of unreferenced files

Plus a small number of obsolete packages (like old versions of qemu).

pkgs/development/tools/documentation/xdoc/builder.sh

@@ -1,5 +0,0 @@
-source $stdenv/setup
-
-configureFlags="--with-aterm=$aterm --with-sglr=$sglr --with-pgen=$pgen
- --with-pt-support=$ptsupport --with-asf-library=$asflibrary --with-strategoxt=$strategoxt --with-graphviz=$graphviz --with-svn=$subversion"
-genericBuild

pkgs/development/tools/documentation/xdoc/default.nix

@@ -1,13 +0,0 @@
-{stdenv, fetchurl, strategoxt, aterm, sdf, subversion, graphviz}: 
-
-stdenv.mkDerivation {
-  name = "xdoc-0.1";
-  src = fetchurl {
-    url = http://machina.nl/xdoc/xdoc-0.1.tar.gz;
-    md5 = "6f601254013d5fe3d2fdbd33b827001a";
-  };
-  builder = ./builder.sh;
-  inherit aterm strategoxt subversion graphviz ;
-  inherit (sdf) sglr pgen ptsupport asflibrary;
-  buildInputs = [aterm sdf.pgen strategoxt];
-}