69401b0852
Automatic merge from submit-queue (batch tested with PRs 60574, 60666, 60831, 60877, 60357). 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>. remove some not used imports from python codes remove some not used imports from python codes /assign @sttts **Release note**: ```release-note NONE ```