tkgate 2.x: remove dead package

Broken since April 2014. Homepage leads to an expired domain.

pkgs/applications/science/electronics/tkgate/2.x.nix

@@ -1,34 +0,0 @@
-{ stdenv, fetchurl, tcl, tk, libX11, glibc }:
-
-let
-  libiconvInc = stdenv.lib.optionalString stdenv.isLinux "${glibc}/include";
-  libiconvLib = stdenv.lib.optionalString stdenv.isLinux "${glibc}/lib";
-in
-stdenv.mkDerivation rec {
-  name = "tkgate-2.0-b10";
-
-  src = fetchurl {
-    url = "http://www.tkgate.org/downloads/${name}.tgz";
-    sha256 = "0mr061xcwjmd8nhyjjcw2dzxqi53hv9xym9xsp0cw98knz2skxjf";
-  };
-
-  buildInputs = [ tcl tk libX11 ];
-
-  dontStrip = true;
-
-  patchPhase = ''
-    sed -i configure \
-      -e 's|TKGATE_INCDIRS=.*|TKGATE_INCDIRS="${tcl}/include ${tk}/include ${libiconvInc}"|' \
-      -e 's|TKGATE_LIBDIRS=.*|TKGATE_LIBDIRS="${tcl}/lib ${tk}/lib ${libiconvLib}"|'
-    sed -i options.h \
-      -e 's|.* #define TCL_LIBRARY .*|#define TCL_LIBRARY "${tcl}/${tcl.libdir}"|' \
-      -e 's|.* #define TK_LIBRARY .*|#define TK_LIBRARY "${tk}/lib/${tk.libPrefix}"|'
-  '';
-
-  meta = {
-    description = "Event driven digital circuit simulator with a TCL/TK-based graphical editor";
-    homepage = "http://www.tkgate.org/";
-    license = stdenv.lib.licenses.gpl2Plus;
-    broken = true;
-  };
-}

pkgs/top-level/all-packages.nix

@@ -3491,9 +3491,6 @@ let
 
   tkgate = callPackage ../applications/science/electronics/tkgate/1.x.nix { };
 
-  # The newer package is low-priority because it segfaults at startup.
-  tkgate2 = lowPrio (callPackage ../applications/science/electronics/tkgate/2.x.nix { });
-
   tm = callPackage ../tools/system/tm { };
 
   tradcpp = callPackage ../development/tools/tradcpp { };