Merge pull request #63773 from k82cn/rm_unused_var
Automatic merge from submit-queue (batch tested with PRs 63773, 65411). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Removed unused vars.
Signed-off-by:
Da K. Ma <klaus1982.cn@gmail.com>
**Release note**:
```release-note
None
```
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