pantheon.wingpanel-indicator-datetime: use upstreamed patch

pkgs/desktops/pantheon/desktop/wingpanel-indicators/datetime/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , nix-update-script
 , substituteAll
 , pantheon
@@ -40,7 +41,10 @@ stdenv.mkDerivation rec {
     })
     # Fix incorrect month shown on re-opening indicator if previously changed month
     # https://github.com/elementary/wingpanel-indicator-datetime/pull/284
-    ./fix-incorrect-month.patch
+    (fetchpatch {
+      url = "https://github.com/elementary/wingpanel-indicator-datetime/commit/9b0bed98e09dfdad62f43a95d956d2f53d824e65.patch";
+      sha256 = "sha256-MQfz4Uzo59SmmfQNi58OA7CIHHkm2TODQz2fmmIall4=";
+    })
   ];
 
   nativeBuildInputs = [

pkgs/desktops/pantheon/desktop/wingpanel-indicators/datetime/fix-incorrect-month.patch

@@ -1,26 +0,0 @@
-From 401cb05d7181e69ae8edd347644f2518904e9acb Mon Sep 17 00:00:00 2001
-From: Jeremy Paul Wootten <jeremywootten@gmail.com>
-Date: Sat, 30 Oct 2021 17:44:12 +0100
-Subject: [PATCH] Reset position and relative position after rebuilding
- carousel
-
----
- src/Widgets/calendar/CalendarView.vala | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/src/Widgets/calendar/CalendarView.vala b/src/Widgets/calendar/CalendarView.vala
-index a41b37a4..f946b91c 100644
---- a/src/Widgets/calendar/CalendarView.vala
-+++ b/src/Widgets/calendar/CalendarView.vala
-@@ -216,7 +216,11 @@ public class DateTime.Widgets.CalendarView : Gtk.Grid {
-             carousel.add (right_grid);
-             carousel.scroll_to (start_month_grid);
-             label.label = calmodel.month_start.format (_("%OB, %Y"));
-+
-+            position = 1;
-+            rel_postion = 0;
-         }
-+
-         carousel.no_show_all = false;
-     }
-