jamp: remove, source is offline and pkg dead

pkgs/games/jamp/default.nix

···
-a @ { mesa, SDL, SDL_image, SDL_mixer, ... } :
-let
-  s = import ./src-for-default.nix;
-  buildInputs = with a; [
-    mesa SDL SDL_mixer SDL_image
-
-  ];
-in
-rec {
-  src = a.fetchUrlFromSrcInfo s;
-
-  inherit (s) name;
-  inherit buildInputs;
-  configureFlags = [];
-
-  preBuild = a.fullDepEntry (''
-    sed -e "s@/usr/games@$out/bin@g" -i Makefile
-    sed -e "s@/usr/@$out/@g" -i Makefile
-    export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I${a.SDL}/include/SDL"
-  '') ["minInit" "addInputs" "doUnpack"];
-
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["preBuild" "doMakeInstall"];
-
-  meta = {
-    description = "A physics-based game";
-    maintainers = [ a.lib.maintainers.raskin ];
-    platforms = a.lib.platforms.linux;
-  };
-}

pkgs/games/jamp/src-for-default.nix

···
-rec {
-   version="1.0.2";
-   name="jamp-1.0.2";
-   hash="13cjggyx63wmlcvpyllmd7aknfd4vzhxnwm030mas7z3h6wcsmk7";
-   url="http://perre.noud.ch/jamp/download.php?file=jamp-${version}.tar.gz";
-   advertisedUrl="http://perre.noud.ch/jamp/download.php?file=jamp-1.0.2.tar.gz";
-  
-  
-}

pkgs/games/jamp/src-info-for-default.nix

···
-{
-  downloadPage = "http://perre.noud.ch/jamp/";
-  baseName = "jamp";
-}

pkgs/top-level/all-packages.nix

···
     lua = lua5;
   };
 
-  jamp = builderDefsPackage (callPackage ../games/jamp) {};
-
   klavaro = callPackage ../games/klavaro {};
 
   kobodeluxe = callPackage ../games/kobodeluxe { };