[glib] Remove the G_GNUC_STRFTIME format check

[Matthias Clasen <matthiasc src gnome org>]

commit 9ddcc79502349e02a1e796b363d891e177337af5
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Nov 1 12:00:58 2018 -0400

    Remove the G_GNUC_STRFTIME format check
    
    This does not work, since g_date_time_format() supports
    non-standard extensions such as %:::z, and this has
    broken several consumers which use format errors, such
    as ostree.

 glib/gdatetime.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/glib/gdatetime.h b/glib/gdatetime.h
index 20167a60d..8bf8cd98d 100644
--- a/glib/gdatetime.h
+++ b/glib/gdatetime.h
@@ -261,7 +261,7 @@ GDateTime *             g_date_time_to_utc                              (GDateTi
 
 GLIB_AVAILABLE_IN_ALL
 gchar *                 g_date_time_format                              (GDateTime      *datetime,
-                                                                         const gchar    *format) 
G_GNUC_MALLOC G_GNUC_STRFTIME (2);
+                                                                         const gchar    *format);
 
 G_END_DECLS