sched/fair: Remove redundant word " *"

" *" is redundant. so remove it.

Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220617181151.29980-2-zhangqiao22@huawei.com