Automatic merge from submit-queue (batch tested with PRs 56068, 57271). 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 kubeadm fuzzer from api testing
**What this PR does / why we need it**:
from @sttts https://github.com/kubernetes/kubernetes/pull/55961#discussion_r151926499
>Please only add fuzzer for apiserver types here, not for configs only used locally. Look for roundtrip_test.go files in the code-base. There are some more which have local fuzzers.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: https://github.com/kubernetes/kubernetes/pull/55961#discussion_r151926499
**Special notes for your reviewer**:
/cc @kubernetes/sig-cluster-lifecycle-pr-reviews
**Release note**:
```release-note
NONE
```