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Automatic merge from submit-queue (batch tested with PRs 55657, 54758, 47584, 55758, 55651). 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>. WaitForCacheSync fail should return for service controller **What this PR does / why we need it**: 1. WaitForCacheSync fail should return for service controller as other controller 2. remove unused function 3. fix several weak error follow up #54280 according to https://github.com/golang/go/wiki/CodeReviewComments#error-strings **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes # **Special notes for your reviewer**: **Release note**: ```release-note NONE ```