Automatic merge from submit-queue. 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>.

Don't delete pkg/generated/bindata.go in make clean

**What this PR does / why we need it**: follow-up to #65985: `pkg/generated/bindata.go` has been re-added to the repo, so `make clean` shouldn't delete it, as doing so makes the tree dirty.

This is mostly problematic for jobs which run `make clean` followed by `make quick-release` or `make release` (like our CI build job), since those won't regenerate `pkg/generated/bindata.go`, as they run builds inside the build container.

**Release note**:

```release-note
NONE
```