Automatic merge from submit-queue (batch tested with PRs 54635, 54250, 54657, 54696, 54700). 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 unused pods in genericScheduler

**What this PR does / why we need it**: source code cleanup. less confusion.

**Special notes for your reviewer**:

**Release note**:

```release-note
None
```