test/e2e: remove podman system service tests

[Luap99]

Two tests are skipped for a long time because they flaked to much, nobody cares about them and there are only debugging endpoints mostly so it is not critical either.

The "of 2 seconds" tests isn't useful either. It waits up to 30s for the exit so it doesn't actually verify a proper timeout. Additionally we have similar checks in the system tests "podman system service - CORS enabled in logs" so I consider this safe to remove.

Fixes #12624

Does this PR introduce a user-facing change?

None

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Luap99

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[Luap99]

And here I thought I could trick the needs tests check into thinking I added a test by removing a test file. Looks like I have to set the label then.

[baude]

LGTM

[rhatdan]

/lgtm