sched/fair: Remove invalid cpu selection logic in dynamic affinity

jingdong inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8PGQ2



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The CPU selected by  select_task_rq_fair may not be
in the corresponding cpuset. This will be corrected
in the subsequent fallback process.

dynamic affinity should not break this logic.
Fixes: f6cee1481527 ("sched: Adjust wakeup cpu range according CPU util dynamicly")
Signed-off-by: zhangwei123171 <zhangwei123171@jd.com>
Signed-off-by: Hui Tang <tanghui20@huawei.com>