Merge pull request #58118 from roberthbailey/vagrant

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>.

Remove the deprecated vagrant kube-up implementation

xref #49213

```release-note
NONE
```

build/lib/release.sh

@@ -516,7 +516,6 @@ EOF
   cp -R "${KUBE_ROOT}/docs" "${release_stage}/"
   cp "${KUBE_ROOT}/README.md" "${release_stage}/"
   cp "${KUBE_ROOT}/Godeps/LICENSES" "${release_stage}/"
-  cp "${KUBE_ROOT}/Vagrantfile" "${release_stage}/"
 
   echo "${KUBE_GIT_VERSION}" > "${release_stage}/version"