Revert "Fix endpoint admission test namespace creation for ROSA"

[Amarthya-v]

This reverts commit 6389c5f.

The mcvw that was blocking namespace operations for cluster-admins is being reverted by the SRE team as it's more disruptive than intended. Since the webhook restriction is being removed, this test fix is no longer needed.

Resolves: SREP-2020

[openshift-ci]

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[tssurya]

@arghosh93 and @kyrtapz PTAL this PR since original PR was merged by both of you #30134 I don't hold any context to review this one.

[sdodson]

/paylod-job periodic-ci-openshift-release-master-nightly-4.21-e2e-rosa-sts-ovn

[openshift-ci]

@Amarthya-v: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/okd-scos-e2e-aws-ovn	4b7e157	link	false	/test okd-scos-e2e-aws-ovn

Full PR test history. Your PR dashboard.

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[sdodson]

/retest-required