gazebo, sdformat: remove

pkgs/development/libraries/sdformat/3.nix

@@ -1,7 +0,0 @@
-{ stdenv, fetchurl, callPackage, ... } @ args:
-
-callPackage ./default.nix (args // {
-  version = "3.7.0";
-  srchash-sha256 = "07kn8bgvj9mwwinsp2cbmz11z7zw2lgnj61mi1gi1pjg7q9in98q";
-})
-

pkgs/development/libraries/sdformat/default.nix

@@ -1,29 +0,0 @@
-{ stdenv, fetchurl, cmake, boost, ruby, ignition, tinyxml
-  , name ? "sdformat-${version}"
-  , version ? "4.0.0" # versions known to work with this expression include 3.7.0
-  , srchash-sha256 ? "b0f94bb40b0d83e35ff250a7916fdfd6df5cdc1e60c47bc53dd2da5e2378163e"
-  , ...
-  }:
-
-stdenv.mkDerivation {
-  src = fetchurl { 
-      url = "http://osrf-distributions.s3.amazonaws.com/sdformat/releases/${name}.tar.bz2";
-      sha256 = srchash-sha256;
-  };
-
-  inherit name;
-
-  prePatch = ''
-    substituteInPlace cmake/sdf_config.cmake.in --replace "@CMAKE_INSTALL_PREFIX@/@LIB_INSTALL_DIR@" "@LIB_INSTALL_DIR@"
-  '';
-
-  enableParallelBuilding = true;
-  buildInputs = [
-    cmake boost ruby ignition.math2 tinyxml
-  ];
-
-  meta = {
-    broken = true;
-    platforms = stdenv.lib.platforms.unix;
-  };
-}