Old docs version still indexing and reachable

[lerongil]

Steps to reproduce the problem

1. Go to Duck Duck Go
2. Search Qiskit Docs
3. Scroll down to 2nd result
4. See https://qiskit-test.readthedocs.io/en/latest/

What is the current behavior?

We see old version of qiskit.org/documentation

What is the expected behavior?

we should see the latest version and it should either redirect or not be indexable at all

Screenshots

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Device

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OS

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Browser

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Additional information

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