Remove exit-on-idle functionality

- This inherently relies on the daemon being activated via D-Bus, which
is problematic for the reasons explained in the previous commit and here:

http://git.gnome.org/browse/notification-daemon/commit/?id=a3f8902

src/daemon/daemon.c

@@ -110,7 +110,6 @@ struct _NotifyDaemon {
 	GSettings* gsettings;
 	guint next_id;
 	guint timeout_source;
-	guint exit_timeout_source;
 	GHashTable* idle_reposition_notify_ids;
 	GHashTable* monitored_window_hash;
 	GHashTable* notification_hash;
@@ -253,33 +252,6 @@ static void _notify_timeout_destroy(NotifyTimeout* nt)
 	g_free(nt);
 }
 
-static gboolean do_exit(gpointer user_data)
-{
-	exit(0);
-	return FALSE;
-}
-
-static void add_exit_timeout(NotifyDaemon* daemon)
-{
-	g_assert (daemon != NULL);
-
-	if (daemon->exit_timeout_source > 0)
-		return;
-
-	daemon->exit_timeout_source = g_timeout_add_seconds(IDLE_SECONDS, do_exit, NULL);
-}
-
-static void remove_exit_timeout(NotifyDaemon* daemon)
-{
-	g_assert (daemon != NULL);
-
-	if (daemon->exit_timeout_source == 0)
-		return;
-
-	g_source_remove(daemon->exit_timeout_source);
-	daemon->exit_timeout_source = 0;
-}
-
 static int
 _gtk_get_monitor_num (GdkMonitor *monitor)
 {
@@ -470,8 +442,6 @@ static void notify_daemon_init(NotifyDaemon* daemon)
 	daemon->timeout_source = 0;
 	daemon->skeleton = notify_daemon_notifications_skeleton_new ();
 
-	add_exit_timeout(daemon);
-
 	daemon->gsettings = g_settings_new (GSETTINGS_SCHEMA);
 
 	g_signal_connect (daemon->gsettings, "changed::" GSETTINGS_KEY_POPUP_LOCATION, G_CALLBACK (on_popup_location_changed), daemon);
@@ -546,8 +516,6 @@ static void notify_daemon_finalize(GObject* object)
 		g_clear_object (&daemon->skeleton);
 	}
 
-	remove_exit_timeout(daemon);
-
 	g_hash_table_destroy(daemon->monitored_window_hash);
 	g_hash_table_destroy(daemon->idle_reposition_notify_ids);
 	g_hash_table_destroy(daemon->notification_hash);
@@ -628,10 +596,6 @@ static void _close_notification(NotifyDaemon* daemon, guint id, gboolean hide_no
 
 		g_hash_table_remove(daemon->notification_hash, &id);
 
-		if (g_hash_table_size(daemon->notification_hash) == 0)
-		{
-			add_exit_timeout(daemon);
-		}
 	}
 }
 
@@ -832,10 +796,6 @@ static gboolean _check_expiration(NotifyDaemon* daemon)
 	{
 		daemon->timeout_source = 0;
 
-		if (g_hash_table_size (daemon->notification_hash) == 0)
-		{
-			add_exit_timeout(daemon);
-		}
 	}
 
 	return has_more_timeouts;
@@ -914,7 +874,6 @@ static NotifyTimeout* _store_notification(NotifyDaemon* daemon, GtkWindow* nw, i
 #else
 	g_hash_table_insert(daemon->notification_hash, g_memdup(&id, sizeof(guint)), nt);
 #endif
-	remove_exit_timeout(daemon);
 
 	return nt;
 }