Automatic merge from submit-queue

Remove the deprecated --babysit-daemons kubelet flag

```release-note
Removes the deprecated kubelet flag --babysit-daemons
```

This flag has been deprecated for over a year (git blame says marked deprecated on March 1, 2016).
Relatively easy removal - nothing in the Kubelet relies on it anymore.

There was still some stuff in the provisioning scripts. It was easy to rip out, but in general we probably need to be more disciplined about updating the provisioning scripts at the same time that we initially mark things deprecated.