vwm, libpseudo, libviper: drop

Last updates date to some time between 2013-2014. Thoroughly unused by
any public Nix repo I can find online.

Take a shot whenever a project hosted on SourceForge appears to have
been abandoned for at least a decade...

ZHF #403336

Author: pluiedev

pkgs/by-name/li/libpseudo/package.nix

@@ -992,6 +992,7 @@ mapAliases {
   liboop = throw "liboop has been removed as it is unmaintained upstream."; # Added 2024-08-14
   libosmo-sccp = libosmo-sigtran; # Added 2024-12-20
   libpqxx_6 = throw "libpqxx_6 has been removed, please use libpqxx"; # Added 2024-10-02
+  libpseudo = throw "'libpseudo' was removed as it is broken and not maintained upstream"; # Added 2025-05-17
   libpulseaudio-vanilla = libpulseaudio; # Added 2022-04-20
   libqt5pas = libsForQt5.libqtpas; # Added 2024-12-25
   libquotient = libsForQt5.libquotient; # Added 2023-11-11
@@ -1931,6 +1932,7 @@ mapAliases {
   vimHugeX = vim-full; # Added 2022-12-04
   vim_configurable = vim-full; # Added 2022-12-04
   vinagre = throw "'vinagre' has been removed as it has been archived upstream. Consider using 'gnome-connections' or 'remmina' instead"; # Added 2024-09-14
+  libviper = throw "'libviper' was removed as it is broken and not maintained upstream"; # Added 2025-05-17
   libviperfx = throw "'libviperfx' was removed as it is broken and not maintained upstream"; # Added 2024-12-16
   vimix-cursor-theme = throw "'vimix-cursor-theme' has been superseded by 'vimix-cursors'"; # Added 2025-03-04
   viper4linux-gui = throw "'viper4linux-gui' was removed as it is broken and not maintained upstream"; # Added 2024-12-16
@@ -1945,6 +1947,7 @@ mapAliases {
   void = throw "'void' has been removed due to lack of upstream maintenance"; # Added 2025-01-25
   volnoti = throw "'volnoti' has been removed due to lack of maintenance upstream."; # Added 2024-12-04
   vuze = throw "'vuze' was removed because it is unmaintained upstream and insecure (CVE-2018-13417). BiglyBT is a maintained fork."; # Added 2024-11-22
+  vwm = throw "'vwm' was removed as it is broken and not maintained upstream"; # Added 2025-05-17
   inherit (libsForQt5.mauiPackages) vvave; # added 2022-05-17
 
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