"TestRestartContainerwithRestartPolicy" contains some codes that could be
flaky, it's supposed to be fixed in #22256.
This commit removes unnecessary code, make the test case cleaner.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
Upstream-commit: a7eecd2b61296825f9a0f739dbc06ad65a3d2c5d
Component: engine