Revert Java:8 image import to default

[prietyc123]

What type of PR is this?

/kind failing-test

What does does this PR do / why we need it:
As https://bugzilla.redhat.com/show_bug.cgi?id=1945281 has been fixed. Reverting java:8 image import to default.

$ docker pull registry.redhat.io/redhat-openjdk-18/openjdk18-openshift:latest
latest: Pulling from redhat-openjdk-18/openjdk18-openshift
Digest: sha256:42567207376487246d144b3b06e7505cb912aaa0f0d1f0a093097e6cbccaa604
Status: Downloaded newer image for registry.redhat.io/redhat-openjdk-18/openjdk18-openshift:latest
registry.redhat.io/redhat-openjdk-18/openjdk18-openshift:latest

Which issue(s) this PR fixes:

Fixes #4598

PR acceptance criteria:

• Unit test

• Integration test

• Documentation

• I have read the test guidelines

How to test changes / Special notes to the reviewer:

All the tests related to java:8 should pass.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: prietyc123

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[prietyc123]

Platform error.

/test v4.7-integration-e2e

[kadel]

/lgtm

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-ci]

@prietyc123: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/psi-kubernetes-integration-e2e	3b00850	link	/test psi-kubernetes-integration-e2e
ci/prow/psi-openshift-integration-e2e	3b00850	link	/test psi-openshift-integration-e2e
ci/prow/psi-minishift-integration-e2e	3b00850	link	/test psi-minishift-integration-e2e

Full PR test history. Your PR dashboard.

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