Clean up onboarding request page

[ColinToft]

Implementation Description

• Remove “These are After School Program onboarding requests”
• Remove: TODO: Add dietary text on the admin on boarding page

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have run the appropriate linter(s)
• I have added tests for my changes
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[github-actions]

Visit the preview URL for this PR (updated for commit f7a1469):

https://feeding-canadian-kids-staging--pr166-onboarding-reques-v0sz3ld8.web.app

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[shahanneda]

Looks great!