Remove a bunch of unreferenced files

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

pkgs/servers/gpm/1.99.6.nix

@@ -1,23 +0,0 @@
-args : with args; 
-rec {
-  src = fetchurl {
-    url = http://linux.schottelius.org/gpm/archives/gpm-1.99.6.tar.lzma;
-    sha256 = "14zxx7nx40k8b0bmwhxfyv20xrdi8cg9fxmv8ylsx661lvizqsg3";
-  };
-
-  buildInputs = [lzma flex bison ncurses];
-  configureFlags = [];
-
-  /* doConfigure should be specified separately */
-  phaseNames = ["preConfigure" "doConfigure" "doMakeInstall"];
-
-  preConfigure = fullDepEntry (''
-    sed -e 's/[$](MKDIR)/mkdir -p /' -i doc/Makefile.in
-    sed -e 's/gpm2//' -i Makefile.in
-  '') ["addInputs" "doUnpack" "minInit"];
-      
-  name = "gpm-" + version;
-  meta = {
-    description = "Mouse daemon";
-  };
-}