🌱Remove APIServerLoadBalancer.Provider Up Conversion

[ching-kuo]

What this PR does / why we need it:

APIServerLoadBalancer.Provider patch is backported to v1alpha6 in PR
#1529. We don't need up conversion for it anymore.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• if necessary:
  • includes documentation
  • adds unit tests

/hold

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[k8s-ci-robot]

Hi @ching-kuo. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jichenjc]

/ok-to-test

[jichenjc]

@mdbooth maybe you can take a look at this ?

[mdbooth]

/approve

Although note that I think I'm basically going to rewrite the way these restorations work. Turns out they're problematic.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ching-kuo, mdbooth

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [mdbooth]

Approvers can indicate their approval by writing /approve in a comment
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[jichenjc]

/hold cancel

[mdbooth]

/lgtm