This fix tries to fix the issue raised in #24168 where
golang.org/x/sys causes s390x build failure.
This fix removed the import of "golang.org/x/sys/unix".
This fix fixes#24168.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: f3d8658fffbf901845c937a40efa66a5b06cdfc3
Component: engine