Removed github workflow periodics in favor of prow

[rjsadow]

fixes: #86

The hack/run-e2e.sh script now works as expected to replace all of our github actions workflows with prow. Periodic conformance and e2e workflows are now successfully running as expected in prow.

Conformance:

Expected results with github actions: https://github.com/kubernetes-sigs/hydrophone/actions/runs/7592586907/job/20682101706#step:9:40
Results in prow: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/hydrophone-conformance-check/1748530959478689792#1:build-log.txt%3A141
Testgrid: https://testgrid.k8s.io/sig-testing-misc#hydrophone-conformance-check

E2E:

Expected results with github actions: https://github.com/kubernetes-sigs/hydrophone/actions/runs/7592595767/job/20682123463#step:9:42
Results in prow: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/hydrophone-e2e-check/1748621557107789824#1:build-log.txt%3A141
Testgrid: https://testgrid.k8s.io/sig-testing-misc#hydrophone-e2e-check

/cc @dims @rakshitgondwal

[k8s-ci-robot]

@rjsadow: GitHub didn't allow me to request PR reviews from the following users: rakshitgondwal.

Note that only kubernetes-sigs members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

fixes: #86

The hack/run-e2e.sh script now works as expected to replace all of our github actions workflows with prow. Periodic conformance and e2e workflows are now successfully running as expected in prow.

Conformance:

Expected results with github actions: https://github.com/kubernetes-sigs/hydrophone/actions/runs/7592586907/job/20682101706#step:9:40
Results in prow: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/hydrophone-conformance-check/1748530959478689792#1:build-log.txt%3A141
Testgrid: https://testgrid.k8s.io/sig-testing-misc#hydrophone-conformance-check

E2E:

Expected results with github actions: https://github.com/kubernetes-sigs/hydrophone/actions/runs/7592595767/job/20682123463#step:9:42
Results in prow: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/hydrophone-e2e-check/1748621557107789824#1:build-log.txt%3A141
Testgrid: https://testgrid.k8s.io/sig-testing-misc#hydrophone-e2e-check

/cc @dims @rakshitgondwal

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[dims]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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