[gtk+] Remove unused _gdk_use_xshm global

[Matthias Clasen <matthiasc src gnome org>]

commit b938e71e1d32926d7739fdf51c13eefce1fea63f
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 15 22:45:37 2010 -0500

    Remove unused _gdk_use_xshm global

 gdk/x11/gdkglobals-x11.c |    2 --
 gdk/x11/gdkprivate-x11.h |    1 -
 2 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/gdk/x11/gdkglobals-x11.c b/gdk/x11/gdkglobals-x11.c
index d9e900e..15144e7 100644
--- a/gdk/x11/gdkglobals-x11.c
+++ b/gdk/x11/gdkglobals-x11.c
@@ -31,6 +31,4 @@
 
 #include <stdio.h>
 
-
-gboolean          _gdk_use_xshm = TRUE;  /* used as a cmd line arg */
 gboolean          _gdk_synchronize = FALSE;
diff --git a/gdk/x11/gdkprivate-x11.h b/gdk/x11/gdkprivate-x11.h
index ccb2a56..5fb3b8a 100644
--- a/gdk/x11/gdkprivate-x11.h
+++ b/gdk/x11/gdkprivate-x11.h
@@ -217,7 +217,6 @@ cairo_surface_t * _gdk_x11_window_create_bitmap_surface (GdkWindow *window,
                                                          int        width,
                                                          int        height);
 
-extern gboolean          _gdk_use_xshm;
 extern const gint        _gdk_x11_event_mask_table[];
 extern const gint        _gdk_x11_event_mask_table_size;
 extern GdkAtom           _gdk_selection_property;