HFI Station Admin: Remove station

[conbrad]

As a HFI Admin I want to remove a station from a planning area So That I only have the stations listed in HFI that are working/are interested in

Additional Context

• Mockup (final state): https://www.figma.com/file/FReMPNBDzxYeE8hlxRvsoB/HFI-Calculator-2022?node-id=1606%3A5246
• Reuse the current station admin permission that already exists for adding a station to also delete stations

Acceptance Criteria

• [ ] Given I perform a remove station action, Then that station does not show up in the planning area in either the UI nor the PDF

Definition of Done

• Ready to Demo in Sprint Review
• Does what I have made have appropriate test coverage?
• Documentation and/or scientific documentation exists and can be found
• Peer Reviewed by 2 people on the team
• Manual testing of all PRs in Dev and Prod
• Merged

[conbrad]

Hey team! Please add your planning poker estimate with ZenHub @andrea-williams @Sybrand

[andrea-williams]

@tessmgood are there any other requirements for this feature?