chore: remove GH pages

[sthulb]

Please provide the issue number

Issue number: #304

Summary

Changes

Please provide a summary of what's being changed

Remove GH pages from GH actions. We no longer use GH pages, as we have migrated to our new docs hosting already.

User experience

Please share what the user experience looks like before and after this change

There should be no change, since we push users to the new docs site already.

Checklist

Please leave checklist items unchecked if they do not apply to your change.

• Meets tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

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