[BUG]: Remove helm charts from NGC

[dagardner-nv]

Version

25.06

Which installation method(s) does this occur on?

Docker

Describe the bug.

These should be removed from the collection and no longer be publicly listed.
We can leave the existing charts for existing users, but no longer advertise them.

Minimum reproducible example

Relevant log output

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Full env printout

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Other/Misc.

No response

Code of Conduct

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• I have searched the open bugs and have found no duplicates for this bug report