removing reader role from Azure wizard cost mgmt

[lcouzens]

Description

This change removes the additional Azure Reader role from the integration wizard during the cost management steps. This reader role is no longer required.

RHCLOUD-34800

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Screenshots

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Checklist ☑️

• [ ] PR only fixes one issue or story
• [ ] Change reviewed for extraneous code
• [ ] UI best practices adhered to
• [ ] Commits squashed and meaningfully named
• [ ] All PR checks pass locally (build, lint, test, E2E)

• [ ] (Optional) QE: Needs QE attention (OUIA changed, perceived impact to tests, no test coverage)
• [ ] (Optional) QE: Has been mentioned
• [ ] (Optional) UX: Needs UX attention (end user UX modified, missing designs)
• [ ] (Optional) UX: Has been mentioned