Revert "Containerized mount utilities"

[x13n]

Reverts #53440

This PR broke pull-kubernetes-cross test.

[k8s-ci-robot]

@x13n: Adding do-not-merge/release-note-label-needed because the release note process has not been followed.

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[k8s-github-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: x13n
We suggest the following additional approver: thockin

Assign the PR to them by writing /assign @thockin in a comment when ready.

Associated issue: 53440

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[x13n]

/assign @thockin

[wojtek-t]

We should fix "cross build", but since it's non-blocking, there is no need to revert it immediately.

@jsafrane - can you please take a look?
@tallclair - FYI

[x13n]

Thanks! Closing in this case.

[jsafrane]

It's already fixed by #55712