remove unused login function, auth token change

[maxwn04]

Info

Closes 396. (If there is no issue for this pull request yet, please create one or
delete this line if the pull request is for a very minor tweak).

Description

What changes did you make? List all distinct problems that this PR addresses. Explain any relevant
motivation or context.

Cleaned up userAuthService and auth token change for multiple roles.

Changes

• Removed unused login function
• Changed auth token to accept multiple accessTypes

Type of Change

• Patch (non-breaking change/bugfix)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to not work as
  expected)
• Documentation (A change to a README/description)
• Continuous Integration/DevOps Change (Related to deployment steps, continuous integration
  workflows, linting, etc.)
• Other: (Fill In)

If you've selected Patch, Minor, or Major as your change type, make sure to bump the version before merging in package.json!

Testing

I have tested that my changes fully resolve the linked issue ...

• locally.
• on the testing API/testing database.
• with appropriate Postman routes. Screenshots are included below.

Checklist

• I have performed a self-review of my own code.
• I have followed the style guidelines of this project.
• I have appropriately edited the API version in the package.json file.
• My changes produce no new warnings.

Screenshots

Please include a screenshot of your Postman testing passing successfully.

[github-actions]

Thanks for contributing!
If you've made changes to the API's functionality, please make sure to bump the package
version—see this guide to semantic versioning for details—and
document those changes as appropriate.

[maxwn04]

Admin features work with updated auth token on v2

[nik-dange]

lgtm, just double check on postman before you merge. I'm also curious if when we decode the token we're checking the accessType at all (or if this is something that just happens), because we always check in the PermissionService anyway