Revert "[7.x][SIEM] apollo@3 (#51926)"

[patrykkopycinski]

Summary

Reverts #58699

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• This was checked for keyboard-only and screenreader accessibility
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser
• This was checked for cross-browser compatibility, including a check against IE11

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 2d4431e

History

• 💔 Build #31695 failed 1266e16

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

[spalger]

LGTM