Remove Superlinter (#568)

Closes: #XXX

## Context and purpose of the change
* The superlinter often inaccurately flags things that aren't actually an error (e.g. it recently said that the Admins variable did not exist). Removing it for now until it appears to work as expected.

## Author's Checklist

I have...

- [ ] Run and PASSED locally all GAIA integration tests
- [ ] If the change is contentful, I either:
    - [ ] Added a new unit test OR 
    - [ ] Added test cases to existing unit tests
- [X] OR this change is a trivial rework / code cleanup without any test coverage

If skipped any of the tests above, explain.


## Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] manually tested (if applicable)
- [ ] confirmed the author wrote unit tests for new logic
- [ ] reviewed documentation exists and is accurate


## Documentation and Release Note

  - [ ] Does this pull request introduce a new feature or user-facing behavior changes? 
  - [ ] Is a relevant changelog entry added to the `Unreleased` section in `CHANGELOG.md`?
  - [ ] This pull request updates existing proto field values (and require a backend and frontend migration)? 
  - [ ] Does this pull request change existing proto field names (and require a frontend migration)?
  How is the feature or change documented? 
      - [ ] not applicable
      - [ ] jira ticket `XXX` 
      - [ ] specification (`x/<module>/spec/`) 
      - [ ] README.md 
      - [ ] not documented