Delete local db functionality

[norascheuch]

What are you trying to accomplish?

When building the variant analysis repositories panel we intended to merge local DB functionality with it. Therefore we started writing functionality, types and test for local DB functionality. Since we're not intending to merge both panels anymore this PR removes all mentions of local DB functionality in the VA panel.

What approach did you choose and why?

• remove skipped tests
• remove corresponding functionality
• run and fix npm run lint
• run and fix npm run find-deadcode
• do rudimentary manual test (create, rename, delete lists and repos in VA panel and run a MRVA)

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[koesie10]

LGTM, thanks!