website: Remove outdated distributions

[juliusvonkohout]

Description of Changes

The KSC has voted and approved kubeflow/community#1002

so

For AKS @ritazh @mosabami @asw101 as in #4153
For Nutanix @johnugeorge #4122
For QBO @alexeadem #4111

please update your distributions.

We had 1.10.0 -> 1.10.1 -> 1.10.2 -> 1.11.0 -> 26.03.0 -> 26.03.1 https://github.com/kubeflow/community-distribution/releases, so some of your distribution are missing out for 5 releases.

"If a distribution no longer qualifies to be listed as a Kubeflow Distribution, its owners will
be notified of the reasons why via their contact details and will have 90 days to implement the
necessary changes.

If the distribution owners do not implement the changes or do not respond to requests, then the
distribution will be removed and will no longer be listed in the Kubeflow website."

You qualify hereby as notified.
cc @kubeflow/kubeflow-distribution-committee and @kubeflow/kubeflow-steering-committee

Related Issues

#4406

[google-oss-prow]

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[juliusvonkohout]

For ProKube @geier in autumn with the next release Prokube is also too far behind.

[juliusvonkohout]

For canonical @deusebio #4366 in autumn with the next release charmed Kubeflow is also too far behind.

[christian-heusel]

@juliusvonkohout as far as I understood the full range of 26.03 (n) - 1.11(n-1) - 1.10 (n-2) is still fine to be listed on the website since it's about two major versions (patch releases are not listed on https://www.kubeflow.org/docs/kubeflow-distribution/releases/) as defined by the linked policy.

(I don't have any involvement in the distributions listed there; just for transparency)

cc @andreyvelich @chasecadet @thesuperzapper @franciscojavierarceo who know more around the intent of the new policy: I added kubeflow/community#1015 to clarify the wording