Revert "plasma5Packages.kitinerary: fix build with Poppler 22.03"

This reverts commit 9adc2089f9.
Clash with update; the patch is already contained and won't apply.

pkgs/applications/kde/kitinerary.nix

@@ -1,4 +1,4 @@
-{ mkDerivation, fetchpatch, lib, extra-cmake-modules
+{ mkDerivation, lib, extra-cmake-modules
 , qtdeclarative, ki18n, kmime, kpkpass
 , poppler, kcontacts, kcalendarcore
 , shared-mime-info
@@ -10,15 +10,6 @@ mkDerivation {
     license = with lib.licenses; [ lgpl21 ];
     maintainers = [ lib.maintainers.bkchr ];
   };
-
-  patches = [
-    # Fix build with poppler 22.03
-    (fetchpatch {
-      url = "https://github.com/KDE/kitinerary/commit/e21d1ffc5fa81a636245f49c97fe7cda63abbb1d.patch";
-      sha256 = "1/zgq9QIOCPplqplDqgpoqzuYFf/m1Ixxawe50t2F04=";
-    })
-  ];
-
   nativeBuildInputs = [
     extra-cmake-modules
     shared-mime-info # for update-mime-database