clearsilver: remove

Motivated by #148779 and an unmaintained upstream.

Author: armeenm

pkgs/development/libraries/clearsilver/default.nix

@@ -168,6 +168,7 @@ mapAliases ({
   claws-mail-gtk2 = throw "claws-mail-gtk2 was removed to get rid of Python 2, please use claws-mail"; # Added 2021-12-05
   claws-mail-gtk3 = claws-mail; # Added 2021-07-10
   clawsMail = throw "'clawsMail' has been renamed to/replaced by 'claws-mail'"; # Converted to throw 2022-02-22
+  clearsilver = throw "clearsilver has been removed: abandoned by upstream"; # Added 2022-03-15
   clutter_gtk = throw "'clutter_gtk' has been renamed to/replaced by 'clutter-gtk'"; # Converted to throw 2022-02-22
   cmakeWithQt4Gui = throw "cmakeWithQt4Gui has been removed in favor of cmakeWithGui (Qt 5)"; # Added 2021-05
   codimd = hedgedoc; # Added 2020-11-29

pkgs/top-level/aliases.nix

@@ -16374,8 +16374,6 @@ with pkgs;
 
   classads = callPackage ../development/libraries/classads { };
 
-  clearsilver = callPackage ../development/libraries/clearsilver { };
-
   clfft = callPackage ../development/libraries/clfft { };
 
   clipp  = callPackage ../development/libraries/clipp { };