[gtk+] Remove unneeded deprecation guards

[Matthias Clasen <matthiasc src gnome org>]

commit 21064a41b500f596050a08f0fb73e7b04276b234
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 17 13:15:18 2017 -0500

    Remove unneeded deprecation guards
    
    No deprecated api used in here, it seems.

 gtk/gtkprintoperation-unix.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkprintoperation-unix.c b/gtk/gtkprintoperation-unix.c
index 5ded7ca..1b8e35d 100644
--- a/gtk/gtkprintoperation-unix.c
+++ b/gtk/gtkprintoperation-unix.c
@@ -202,7 +202,6 @@ shell_command_substitute_file (const gchar *cmd,
   return g_string_free (final, FALSE);
 }
 
-G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 static void
 gtk_print_operation_unix_launch_preview (GtkPrintOperation *op,
                                          cairo_surface_t   *surface,
@@ -343,7 +342,6 @@ gtk_print_operation_unix_launch_preview (GtkPrintOperation *op,
   g_free (data);
   g_free (settings_filename);
 }
-G_GNUC_END_IGNORE_DEPRECATIONS
 
 static void
 unix_finish_send  (GtkPrintJob  *job,