Delete outdated info in support-policies.md

[JoeyC-Dev]

Proposed change: Delete the outdated info, since it does auto upgrade nodeOS image by default.

Supporting point: Try to create AKS in both Azure portal and az-cli w/o modification, the upgrade channel is "nodeOS" by default. There is no point of saying "doesn't automatically patch them by default" and this will mislead users.

aks=
rG=

az aks create -n ${aks} -g ${rG} --no-wait --no-ssh-key
az aks show -n ${aks} -g ${rG} --query autoUpgradeProfile.nodeOsUpgradeChannel -o tsv

Result:

joey [ ~ ]$ az aks show -n ${aks} -g ${rG} --query autoUpgradeProfile.nodeOsUpgradeChannel -o tsv
NodeImage

Also from Azure portal:

[prmerger-automator[bot]]

@JoeyC-Dev : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[Jak-MS]

@Nickomang Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

label:"aq-pr-triaged"

@MicrosoftDocs/public-repo-pr-review-team

[github-actions[bot]]

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Resolve Merge Conflict

[schaffererin]

reassign:schaffererin

[schaffererin]

I'm going to close this PR, as I created a new PR with the same updates that more closely aligns with Microsoft writing style guidance. Thanks for your contribution to the docs!

please-close