feat!: remove support for local CodeJail

[MoisesGSalas]

WIP as part of: openedx/openedx-platform#36639

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[MoisesGSalas]

Hi @feanil, i would like a little bit of advice and what would be the best way to handle this:

A lot of the tests in here rely on running codejail locally to pass (51/814). If I configure an instance of codejail-service that listens to localhost:8550 and set ENABLE_CODEJAIL_REST_SERVICE = True in test_settings.py the whole suite passes.

Should we add an skip those fifty tests? Delete them?