Automatic merge from submit-queue (batch tested with PRs 50589, 50558)

Remove packages which aren't relied on by heapster anymore.

**What this PR does / why we need it**:
Do the TODO:
```
// TODO apimachinery remove this empty package.  Godep fails without this because heapster relies
// on this package.  This will allow us to start splitting packages, but will force
// heapster to update on their next kube rebase.
```

These packages aren't relied on by heapster anymore. This PR removes them. This is a followup of #48410.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
ref: #48386 #48410

**Special notes for your reviewer**:
/cc @deads2k 
/kind cleanup

**Release note**:

```release-note
NONE
```