Revert "config: enable set the max iova mag size to 128"

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8KS9A


CVE: NA

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This reverts commit ae2040f5.

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
(cherry picked from commit 6ca1b859)