Automatic merge from submit-queue (batch tested with PRs 61389, 66817, 66903, 66675, 66965). 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 internal client factory method

remove final uses of the internal client factory method.  https://github.com/kubernetes/kubernetes/pull/66933 does the rolling updater, so this just snips it off and prevents anyone else from ever relying on it.

@kubernetes/sig-cli-maintainers 
/assign @soltysh 

```release-note
NONE
```