test: cleanup systemtest init

[kruskall]

Motivation/summary

we don't need to upload apmpackage so we can cleanup the init code. Avoid cleaning es during init, it should be cleaned in specific tests to support the -count flag.

Checklist

• Update CHANGELOG.asciidoc
• Documentation has been updated

For functional changes, consider:

• Is it observable through the addition of either logging or metrics?
• Is its use being published in telemetry to enable product improvement?
• Have system tests been added to avoid regression?

How to test these changes

Related issues

[mergify]

This pull request does not have a backport label. Could you fix it @kruskall? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-7.17 is the label to automatically backport to the 7.17 branch.
• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit.

NOTE: backport-skip has been added to this pull request.

[v1v]

run docs-build

[carsonip]

Avoid cleaning es during init, it should be cleaned in specific tests to support the -count flag.

which -count flag are you referring to?

[kruskall]

which -count flag are you referring to?

the builtin -count flag for go test