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>.

federation: Remove manifests which are no longer used

Federation manifests files which are meant to be used by CI jobs are no longer used and are out-dated and no longer maintained. So removing them.

**Release note**:
```release-note
NONE
```

/cc @kubernetes/sig-federation-pr-reviews @madhusudancs