x86/apic/es7000_32: Remove unused variable

In today's linux-next I got this compile warning:

 arch/x86/kernel/apic/es7000_32.c:132: warning: 'base' defined but not used

Current patch solves the issue removing the unused variable.

Signed-off-by: Javier Martinez Canillas <martinez.javier@gmail.com>
Cc: Rakib Mullick <rakib.mullick@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <1278546719.9020.4.camel@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>