Remove helm related files and update docs

[drmjo]

Remove helm related files (#778)

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[k8s-ci-robot]

Hi @drmjo. Thanks for your PR.

I'm waiting for a kubernetes-sigs or kubernetes 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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[drmjo]

📋 done

[M00nF1sh]

Hi dude! Thanks for help make this change! You are super fast 👍

/ok-to-test

[M00nF1sh]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: drmjo, M00nF1sh

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