[glib] Drop an unused variable

[Ryan Lortie <ryanl src gnome org>]

commit 8ef30eb3da2e371bf6cbaa4d102b89b948fc04bb
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 19 07:19:17 2011 -0400

    Drop an unused variable

 glib/gthread.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/glib/gthread.c b/glib/gthread.c
index a3f4b6a..2045ff0 100644
--- a/glib/gthread.c
+++ b/glib/gthread.c
@@ -288,7 +288,6 @@ guint64        (*g_thread_gettime) (void) = gettime;
 /* Global Variables {{{1 -------------------------------------------------- */
 
 static GSystemThread zero_thread; /* This is initialized to all zero */
-gboolean g_thread_use_default_impl = TRUE;
 
 /**
  * g_thread_supported: