[FRONTEND] Integrate deletion on to the event editing

[choden-dev]

Is your feature request related to a problem? Please describe.

Using the endpoint created in #820 and the placeholders done in #818, you should now be able to create the relevant methods to call in WrappedAdminEventsView.

BEFORE MERGING

• Storybooks created where possible
• Tested with nock if data fetching
• Tests written for critical interactions
• PR Reviewed (For non-trivial changes)
• Changes tested after rebasing on master or merging in master (hint: git fetch origin master:master, then git rebase master or git merge master)
• All required PR checks passing