modules(desktop.plasma): Remove patch for wallpaper-engine-plugin

- PR 334984 merged

modules/system/desktop/plasma.nix

@@ -3,10 +3,6 @@
 with lib;
 let
   cfg = config.modules.system.desktop.plasma;
-  nixpkgsPr = builtins.fetchTarball {
-    url = "https://github.com/Sicheng-Pan/nixpkgs/archive/5ba93319d81da028339755243fa405556a2b18d7.tar.gz";
-    sha256 = "0xiighffwyhis6ni815s6bqcrvhsr3s7c208sq3c4y5p2f1g397w";
-  };
 in
 {
   options.modules.system.desktop.plasma = {
@@ -39,15 +35,6 @@ in
       discover
       kgpg
       yakuake
-    ] ++ lib.optionals cfg.enableWallpaperEngine [
-      ### wallpaper-engine-plugin
-      (callPackage "${nixpkgsPr}/pkgs/kde/third-party/wallpaper-engine-plugin/default.nix" {})
-      qtmultimedia
-      qtwebchannel
-      qtwebengine
-      qtwebsockets
-      (python3.withPackages (python-pkgs: [ python-pkgs.websockets ]))
-      ###
-    ];
+    ] ++ lib.optionals cfg.enableWallpaperEngine [ wallpaper-engine-plugin ];
   };
 }