lxqt.lxqt-policykit: remove unused pcre dependency

This dependency has been added in nixpkgs commit 644938a while upgrading from version 0.11.1 -> 0.12.0, but upstream never added a dependency on pcre. See: lxqt/lxqt-policykit@0.11.1...0.12.0. In fact the entire upstream repo doesn't contain a mention of pcre

Author: patka-123

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

@@ -7,7 +7,6 @@
   liblxqt,
   libqtxdg,
   lxqt-build-tools,
-  pcre,
   pkg-config,
   polkit,
   polkit-qt-1,
@@ -42,7 +41,6 @@ stdenv.mkDerivation rec {
     kwindowsystem
     liblxqt
     libqtxdg
-    pcre
     polkit
     polkit-qt-1
     qtbase