sway: remove unused build inputs (#237625)

None of these have been used since before Sway 1.0.

pkgs/applications/window-managers/sway/default.nix

@@ -1,23 +1,21 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, substituteAll, swaybg
 , meson, ninja, pkg-config, wayland-scanner, scdoc
 , wayland, libxkbcommon, pcre2, json_c, libevdev
-, pango, cairo, libinput, libcap, pam, gdk-pixbuf, librsvg
+, pango, cairo, libinput, gdk-pixbuf, librsvg
 , wlroots_0_16, wayland-protocols, libdrm
 , nixosTests
 # Used by the NixOS module:
 , isNixOS ? false
 , enableXWayland ? true, xorg
 , systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd, systemd
-, dbusSupport ? true
-, dbus
-, trayEnabled ? systemdSupport && dbusSupport
+, trayEnabled ? systemdSupport
 }:
 
 # The "sd-bus-provider" meson option does not include a "none" option,
 # but it is silently ignored iff "-Dtray=disabled".  We use "basu"
 # (which is not in nixpkgs) instead of "none" to alert us if this
 # changes: https://github.com/swaywm/sway/issues/6843#issuecomment-1047288761
-assert trayEnabled -> systemdSupport && dbusSupport;
+assert trayEnabled -> systemdSupport;
 let sd-bus-provider = if systemdSupport then "libsystemd" else "basu"; in
 
 stdenv.mkDerivation rec {
@@ -65,11 +63,9 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     wayland libxkbcommon pcre2 json_c libevdev
-    pango cairo libinput libcap pam gdk-pixbuf librsvg
+    pango cairo libinput gdk-pixbuf librsvg
     wayland-protocols libdrm
     (wlroots_0_16.override { inherit enableXWayland; })
-  ] ++ lib.optionals dbusSupport [
-    dbus
   ] ++ lib.optionals enableXWayland [
     xorg.xcbutilwm
   ];