nfs: Remove duplicated include in localio.c

The header files linux/module.h is included twice in localio.c,
so one inclusion of each can be removed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=11073


Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>