Remove declarations from API builds

[biwano]

Description

Remove declarations from API builds This aims to reduce the bundle size and reduce API cold start time.

Note that that the function size displayed by Vercel did not change (4.75MB) So

• I think this is refering to something else.
• This PR won't improve cold start time. (will try to reload the page in 2 days to compare speeds)

Related Ticket

related to #2153

How to Test

1. Check that the output no longer contains types here: https://vercel.com/klimadao/carbonmark-api/7tNypkZcW5MBZCnarjfBeibyQHQb/functions?name=api%2Fserverless
2. Check that the API is working here: https://carbonmark-j1bd4osvs-klimadao.vercel.app/#/

Notes For QA

• [x] This PR is low-risk or narrow in scope, QA is not needed.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
carbon	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 19, 2024 6:51am
carbonmark	✅ Ready (Inspect)	Visit Preview		Feb 19, 2024 6:51am
carbonmark-api	✅ Ready (Inspect)	Visit Preview		Feb 19, 2024 6:51am
demo-integration	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 19, 2024 6:51am
klimadao-app	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 19, 2024 6:51am

[Atmosfearful]

@biwano good to go when you update the version number.