libgcrypt_1_8: drop

`libgcrypt_1_8` is end-of-life since 2024-12-31, see https://www.gnupg.org/download/index.html#end-of-life

Author: LeSuisse

pkgs/development/libraries/libgcrypt/1.8.nix

@@ -672,6 +672,7 @@ mapAliases {
   libbitcoin-network = throw "libbitcoin-network has been removed as it required an obsolete version of Boost and had no maintainer in Nixpkgs"; # Added 2024-11-24
   libbitcoin-protocol = throw "libbitcoin-protocol has been removed as it required an obsolete version of Boost and had no maintainer in Nixpkgs"; # Added 2024-11-24
   libdwg = throw "libdwg has been removed as upstream is unmaintained, the code doesn't build without significant patches, and the package had no reverse dependencies"; # Added 2024-12-28
+  libgcrypt_1_8 = throw "'libgcrypt_1_8' is end-of-life. Consider using 'libgcrypt' instead"; # Added 2025-01-05
   libgme = game-music-emu; # Added 2022-07-20
   libgnome-keyring3 = libgnome-keyring; # Added 2024-06-22
   libgpgerror = throw "'libgpgerror' has been renamed to/replaced by 'libgpg-error'"; # Converted to throw 2024-10-17

pkgs/top-level/aliases.nix

@@ -9668,8 +9668,6 @@ with pkgs;
 
   libgcrypt = callPackage ../development/libraries/libgcrypt { };
 
-  libgcrypt_1_8 = callPackage ../development/libraries/libgcrypt/1.8.nix { };
-
   libgdiplus = callPackage ../development/libraries/libgdiplus {
       inherit (darwin.apple_sdk.frameworks) Carbon;
   };