chore: remove unused backends DS-960

[BryanttV]

Description

This PR removes unused backends.

The following settings were removed from common.py:

settings.GET_CERTIFICATES_MODULE = 'eox_tenant.edxapp_wrapper.backends.certificates_module_i_v1'
settings.UTILS_MODULE_BACKEND = 'eox_tenant.edxapp_wrapper.backends.util_h_v1'

Additionally, the following modules were removed from edxapp_wrapper/backends:

• edx_auth_i_v1.py

All other backends are currently being used in common.py file.

Testing instructions

1. Install the plugin with these changes in a Quince environment.
2. Test the functionality of the plugin. Everything should work correctly,

Checklist for Merge

• Tested in a remote environment
• Updated documentation
• Rebased master/main
• Squashed commits

[mariajgrimaldi]

We need to update the compatibility notes to remove the deleted backend in the ironwood notes: https://github.com/eduNEXT/eox-tenant/blob/master/README.rst#compatibility-notes. Also, could you improve the formatting in the compatibility notes table? Thanks!

[BryanttV]

Hi @mariajgrimaldi, thanks for the review.

We need to update the compatibility notes to remove the deleted backend in the ironwood notes

I also thought about doing it, however, @bra-i-am tells me it should not be removed because this backend does exist if we install a version of eox-tenant compatible with Ironwood, e.g. v2.6.0. If you check the other backends mentioned in the Ironwood notes, you can see that these files no longer exist but are still in README.

could you improve the formatting in the compatibility notes table?

Yes, I can format it correctly.

[mariajgrimaldi]

@BryanttV: good to know, thanks for the explanation!

[bra-i-am]

LGTM!

---

We need to update the compatibility notes to remove the deleted backend in the ironwood notes

@mariajgrimaldi you are right, we need to update not only the compatibility notes but also the whole readme so it is more appropriate and trustable, nevertheless, taking into account that the readme at this moment works as @BryanttV mentioned, I believe we can wait for this card, but if you consider this needs to be done right now, there's no problem to me

[BryanttV]

Since another card already exists, I will merge with these changes.