keepassx: remove module

This removes the services.keepassx module and all options related to it.
This is because KeePassX has been unmaintaned for a long time, and the
migration path to KeePassXC is not clear.

Note, this package probably hasn't worked for nearly a year since the
package was removed from Nixpkgs:
https://github.com/NixOS/nixpkgs/pull/216748

Closes #4949

Signed-off-by: Sumner Evans <me@sumnerevans.com>

modules/modules.nix

@@ -291,7 +291,6 @@ let
     ./services/kanshi.nix
     ./services/kbfs.nix
     ./services/kdeconnect.nix
-    ./services/keepassx.nix
     ./services/keybase.nix
     ./services/keynav.nix
     ./services/lieer.nix
@@ -383,6 +382,9 @@ let
     (mkRemovedOptionModule [ "services" "password-store-sync" ] ''
       Use services.git-sync instead.
     '')
+    (mkRemovedOptionModule [ "services" "keepassx" ] ''
+      KeePassX is no longer maintained.
+    '')
   ] ++ optional useNixpkgsModule ./misc/nixpkgs.nix
     ++ optional (!useNixpkgsModule) ./misc/nixpkgs-disabled.nix;
 

modules/services/keepassx.nix

@@ -1,31 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-{
-  meta.maintainers = [ maintainers.rycee ];
-
-  options = {
-    services.keepassx = {
-      enable = mkEnableOption "the KeePassX password manager";
-    };
-  };
-
-  config = mkIf config.services.keepassx.enable {
-    assertions = [
-      (hm.assertions.assertPlatform "services.keepassx" pkgs platforms.linux)
-    ];
-
-    systemd.user.services.keepassx = {
-      Unit = {
-        Description = "KeePassX password manager";
-        After = [ "graphical-session-pre.target" ];
-        PartOf = [ "graphical-session.target" ];
-      };
-
-      Install = { WantedBy = [ "graphical-session.target" ]; };
-
-      Service = { ExecStart = "${pkgs.keepassx}/bin/keepassx -min -lock"; };
-    };
-  };
-}