drop support for beta functionality

[lucasmoura]

Why is this needed?

The Pro client doesn't support any beta services at the moment. Additionally, we want to update our beta service logic for the next beta service we support. Due to that, we are removing the current code for beta support. However, we are keeping the beta related CLI entrypoints for compatibility reasons.

Test Steps

Verify that none of our tests are impacted by this

Checklist

• [x] I have updated or added any unit tests accordingly
• [x] I have updated or added any integration tests accordingly
• [ ] Changes here need to be documented, and this was done in:

Does this PR require extra reviews?

• [ ] Yes
• [x] No

[github-actions[bot]]

Jira: This PR is not related to a Jira item. (The PR title does not include a SC-#### reference)

GitHub Issues: No GitHub issues are fixed by this PR. (No commits have Fixes: #### references)

Launchpad Bugs: No Launchpad bugs are fixed by this PR. (No commits have LP: #### references)

Documentation: The changes in this PR do not require documentation changes.

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