x86/apic: Remove duplicated include from probe_64.c

Remove duplicated include.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Link: http://lkml.kernel.org/r/1468929740-8999-1-git-send-email-weiyj_lk@163.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>