perlPackages.GnuPG: drop

It is still not compatible with GnuPG 2 and has no remaining usages
within nixpkgs.

pkgs/top-level/perl-packages.nix

@@ -10984,22 +10984,6 @@ with self; {
     };
   };
 
-  GnuPG = buildPerlPackage {
-    pname = "GnuPG";
-    version = "0.19";
-    src = fetchurl {
-      url = "mirror://cpan/authors/id/Y/YA/YANICK/GnuPG-0.19.tar.gz";
-      hash = "sha256-r1Py0/Yyl+BGZ26uFKdilq/dKRDglyO2sRNwhiK3mJs=";
-    };
-    buildInputs = [ pkgs.gnupg1orig ];
-    doCheck = false;
-    meta = {
-      description = "Perl interface to the GNU Privacy Guard";
-      license = with lib.licenses; [ gpl2Plus ];
-      mainProgram = "gpgmailtunl";
-    };
-  };
-
   GnuPGInterface = buildPerlPackage {
     pname = "GnuPG-Interface";
     version = "1.03";
@@ -29530,4 +29514,5 @@ with self; {
 
   Gtk2GladeXML = throw "Gtk2GladeXML has been removed"; # 2022-01-15
   pcscperl = throw "'pcscperl' has been renamed to 'ChipcardPCSC'"; # Added 2023-12-07
+  GnuPG = throw "'GnuPG' has been removed"; # 2025-01-11
 }