[gnome-calendar] date-chooser: Drop the unused month-changed signal

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 24713fbb65476d8108dec5b966c12cc78f121d3f
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Apr 7 15:07:57 2022 +0200

    date-chooser: Drop the unused month-changed signal
    
    It's never emitted or connected to.

 src/gui/event-editor/gcal-date-chooser.c | 9 ---------
 1 file changed, 9 deletions(-)
---
diff --git a/src/gui/event-editor/gcal-date-chooser.c b/src/gui/event-editor/gcal-date-chooser.c
index 09d320e6..89a0504a 100644
--- a/src/gui/event-editor/gcal-date-chooser.c
+++ b/src/gui/event-editor/gcal-date-chooser.c
@@ -56,7 +56,6 @@ G_DEFINE_TYPE (GcalDateChooser, gcal_date_chooser, ADW_TYPE_BIN)
 
 enum
 {
-  MONTH_CHANGED,
   DAY_SELECTED,
   LAST_SIGNAL
 };
@@ -484,14 +483,6 @@ gcal_date_chooser_class_init (GcalDateChooserClass *class)
 
   g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
 
-  signals[MONTH_CHANGED] = g_signal_new ("month-changed",
-                                         G_OBJECT_CLASS_TYPE (object_class),
-                                         G_SIGNAL_RUN_FIRST,
-                                         0,
-                                         NULL, NULL,
-                                         NULL,
-                                         G_TYPE_NONE, 0);
-
   signals[DAY_SELECTED] = g_signal_new ("day-selected",
                                         G_OBJECT_CLASS_TYPE (object_class),
                                         G_SIGNAL_RUN_FIRST,