[gnome-shell/1714-calendar-events-in-popup-use-the-wrong-timezone] Remove unused variables

[Milan Crha <mcrha src gnome org>]

commit 049b802f7baf2ee7abaff33b010e0e8813aa4b96
Author: Milan Crha <mcrha redhat com>
Date:   Tue Nov 5 12:19:12 2019 +0100

    Remove unused variables

 src/calendar-server/gnome-shell-calendar-server.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/calendar-server/gnome-shell-calendar-server.c 
b/src/calendar-server/gnome-shell-calendar-server.c
index 96cf36f630..9c88a2f9e7 100644
--- a/src/calendar-server/gnome-shell-calendar-server.c
+++ b/src/calendar-server/gnome-shell-calendar-server.c
@@ -455,10 +455,8 @@ generate_instances_cb (ICalComponent *icomp,
   GHashTable *appointments = ((CollectAppointmentsData *)user_data)->appointments;
   CalendarAppointment *appointment;
   CalendarOccurrence *occurrence;
-  ICalTimezone *default_zone, *tz;
   const gchar *uid;
 
-  default_zone = e_cal_client_get_default_timezone (cal);
   uid = i_cal_component_get_uid (icomp);
   appointment = g_hash_table_lookup (appointments, uid);