share_pool: Remove the redundant warning message

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4M253


CVE: NA

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No need to record the redundant message for out of memory,
the kernel already handle it when oom.

Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>