Remove unnecessary jest.config.js files

[gsoldevila]

Just noticed on a failed build that core's jest tests seems to run twice
#135832 (comment)
So a failure shows up in Jest test #2 and Jest test #5

After analyzing the various jest.config.js files in the Kibana project, we noticed that the following 2 files:

• src/core/jest.config.js
• src/plugins/chart_expressions/jest.config.js

are causing tests to run twice, as their containing folders have subfolders that define more specific jest configurations.

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 6d56dca
• Storybooks Preview
• Webpack Bundle Analyzer

Failed CI Steps

• Jest Tests #6
• Linting (with types)

Test Failures

• [job] [logs] Jest Tests #6 / When displaying the Delete artfifact modal in the Artifact List Page should close modal if Cancel/Close buttons are clicked
• [job] [logs] Jest Tests #6 / When displaying the Delete artfifact modal in the Artifact List Page should prevent modal from being closed while deletion is in flight
• [job] [logs] Jest Tests #6 / When displaying the Delete artfifact modal in the Artifact List Page should show Cancel and Delete buttons enabled
• [job] [logs] Jest Tests #6 / When displaying the Delete artfifact modal in the Artifact List Page should show success toast if deleted successfully

Metrics [docs]

✅ unchanged

History

• 💔 Build #55932 failed b374ac2
• 💚 Build #55859 succeeded 6ae4aa5

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[gsoldevila]

Solved by #135960