User Story:
As an OpenShift Engineer I want PExt/vsphere CI periodic 4.15-e2e-external-vsphere-ccm: remove unsupported TEST_SKIPS regex so improve CI signal. Ref. <https://prow.ci.openshift.org/view/gs/test-platform-results/logs/periodic-ci-openshift-release-master-nightly-4.15-e2e-external-vsphere-ccm/1926428375593783296|https://prow.ci.openshift.org/view/gs/test-platform-results/logs/periodic-ci-openshift-[…]-nightly-4.15-e2e-external-vsphere-ccm/1926428375593783296>.

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issue created by splat-bot

created from thread: https://redhat-internal.slack.com/archives/C064717U0D7/p1748136482434049