Remove some outdated migrations

[hmpf]

Scope and purpose

Removes any squashed migrations files.

After check out/install, in dev it is necessary to run

python manage.py migrate --prune argus_notificationprofile
python manage.py migrate --prune argus_incident
python manage.py migrate --prune argus_auth

to clean up the hidden migrations table. Smart to do it in production too.

How to test

1. Migrate existing db, play around
2. Run up a fresh copy of argus (using a different/empty database) to see if that is still possible, then see if tests are still green.

Testing with tox or github-actions does step 2 on every test-run.

Contributor Checklist

Every pull request should have this checklist filled out, no matter how small it is.
More information about contributing to Argus can be found in the
Development docs.

• Added a changelog fragment for towncrier
• [ ] Added/amended tests for new/changed code
• [ ] Added/changed documentation, including updates to the user manual if feature flow or UI is considerably changed
• Linted/formatted the code with ruff and djLint, easiest by using pre-commit
• The first line of the commit message continues the sentence "If applied, this commit will ...", starts with a capital letter, does not end with punctuation and is 50 characters or less long. See our how-to
• If applicable: Created new issues if this PR does not fix the issue completely/there is further work to be done
• [ ] If this results in changes in the UI: Added screenshots of the before and after
• [ ] If this results in changes to the database model: Updated the ER diagram

[github-actions]

Test results

    8 files  1 792 suites   3m 31s ⏱️
1 005 tests 1 004 ✅ 1 💤 0 ❌
8 040 runs  8 032 ✅ 8 💤 0 ❌

Results for commit 71016aa.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.01%. Comparing base (36932bf) to head (71016aa).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2022   +/-   ##
=======================================
  Coverage   89.01%   89.01%           
=======================================
  Files         155      155           
  Lines        7321     7321           
=======================================
  Hits         6517     6517           
  Misses        804      804           

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[aleksfl]

Does not break anything in my testing scenarios. I would update / remove the skipped test class in migration_example.py that references the removed migrations.