Revert persona research banner code

[jimchamp]

Closes #8484

Reverts nearly all of #8192. Only the changes to the s3_loan_api function remain.

Technical

Testing

Screenshot

Stakeholders

[mekarpeles]

LGTM, looks like we have one mypy issue?

openlibrary/catalog/get_ia.py:25: error: Item "None" of "Response | None" has
no attribute "status_code"  [union-attr]
                if error.response.status_code in (403, 404, 416):

Not sure if related to this PR

[cdrini]

@mekarpeles Unrelated ; merging this one through since I'm about to deploy and would love to get this fix in!

[cdrini]

Oh shoot just saw this hadn't been tested yet! I'll take a look on staging before deploying 👍

[cdrini]

Tested can log in successfully on staging!