plasma-pa: drop GConf dependency

Removed from upsteam at 5.24.90/5.25.0

Sources:
- https://invent.kde.org/plasma/plasma-pa/-/merge_requests/117
- 36d6eb9c2b

pkgs/desktops/plasma-5/default.nix

@@ -28,7 +28,6 @@
 , lib
 , config
 , fetchurl
-, gconf
 , gsettings-desktop-schemas
 }:
 
@@ -156,7 +155,7 @@ let
       plasma-mobile = callPackage ./plasma-mobile { };
       plasma-nano = callPackage ./plasma-nano { };
       plasma-nm = callPackage ./plasma-nm { };
-      plasma-pa = callPackage ./plasma-pa.nix { inherit gconf; };
+      plasma-pa = callPackage ./plasma-pa.nix { };
       plasma-remotecontrollers = callPackage ./plasma-remotecontrollers.nix { };
       plasma-sdk = callPackage ./plasma-sdk.nix { };
       plasma-systemmonitor = callPackage ./plasma-systemmonitor.nix { };

pkgs/desktops/plasma-5/plasma-pa.nix

@@ -11,7 +11,6 @@
 , plasma-framework
 , qtbase
 , qtdeclarative
-, gconf
 , glib
 , libcanberra-gtk3
 , libpulseaudio
@@ -22,7 +21,6 @@ mkDerivation {
   pname = "plasma-pa";
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   buildInputs = [
-    gconf
     glib
     libcanberra-gtk3
     libpulseaudio

pkgs/top-level/qt5-packages.nix

@@ -40,7 +40,6 @@ makeScopeWithSplicing' {
     attrs = {
       inherit libsForQt5;
       inherit (pkgs) config lib fetchurl;
-      gconf = pkgs.gnome2.GConf;
       inherit (pkgs) gsettings-desktop-schemas;
     };
   in (lib.makeOverridable mkPlasma5 attrs);