x86: unexport __{read,write}_lock_failed

This patch removes the unused exports for __{read,write}_lock_failed.

Signed-off-by: Adrian Bunk <bunk@kernel.org>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/x8664_ksyms_64.c

@@ -34,13 +34,6 @@ EXPORT_SYMBOL(__copy_from_user_inatomic);
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(clear_page);
 
-#ifdef CONFIG_SMP
-extern void  __write_lock_failed(rwlock_t *rw);
-extern void  __read_lock_failed(rwlock_t *rw);
-EXPORT_SYMBOL(__write_lock_failed);
-EXPORT_SYMBOL(__read_lock_failed);
-#endif
-
 /* Export string functions. We normally rely on gcc builtin for most of these,
    but gcc sometimes decides not to inline them. */    
 #undef memcpy