lxqt.lxqt-qtplugin_1_4: drop

Unused in tree.

pkgs/desktops/lxqt/default.nix

···
         lxqt-build-tools = lxqt-build-tools_0_13;
         inherit (pkgs.libsForQt5) qttools qtx11extras;
       };
-      lxqt-qtplugin_1_4 = callPackage ./lxqt-qtplugin {
-        version = "1.4.1";
-        lxqt-build-tools = lxqt-build-tools_0_13;
-        libqtxdg = libqtxdg_3_12;
-        libfm-qt = libfm-qt_1_4;
-        inherit (pkgs.libsForQt5)
-          qtbase
-          qtsvg
-          qttools
-          libdbusmenu
-          ;
-      };
       qtermwidget_1_4 = callPackage ./qtermwidget {
         version = "1.4.0";
         lxqt-build-tools = lxqt-build-tools_0_13;

pkgs/desktops/lxqt/lxqt-qtplugin/default.nix

···
   fetchFromGitHub,
   cmake,
   libdbusmenu-lxqt,
-  libdbusmenu ? null,
   libfm-qt,
   libqtxdg,
   lxqt-build-tools,
···
   qtsvg,
   qttools,
   wrapQtAppsHook,
-  version ? "2.2.0",
 }:
 
 stdenv.mkDerivation rec {
   pname = "lxqt-qtplugin";
-  inherit version;
+  version = "2.2.0";
 
   src = fetchFromGitHub {
     owner = "lxqt";
     repo = pname;
     rev = version;
-    hash =
-      {
-        "1.4.1" = "sha256-sp/LvQNfodMYQ4kNbBv4PTNfs38XjYLezuxRltZd4kc=";
-        "2.2.0" = "sha256-qXadz9JBk4TURAWj6ByP/lGV1u0Z6rNJ/VraBh5zY+Q=";
-      }
-      ."${version}";
+    hash = "sha256-qXadz9JBk4TURAWj6ByP/lGV1u0Z6rNJ/VraBh5zY+Q=";
   };
 
   nativeBuildInputs = [
···
   ];
 
   buildInputs = [
-    (if lib.versionAtLeast version "2.0.0" then libdbusmenu-lxqt else libdbusmenu)
+    libdbusmenu-lxqt
     libfm-qt
     libqtxdg
     qtbase