Remove automatic triage/needs-triage label creation

[sutaakar]

Issue link

What changes have been made

Remove workflow job adding triage/needs-triage label for new issues. Currently the triage is leveraging priority field.

Verification steps

Checks

• [ ] I've made sure the tests are passing.
• Testing Strategy
  • [ ] Unit tests
  • [ ] Manual tests
  • [ ] Testing is not required for this change

[openshift-ci[bot]]

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