remove requirements from payment response header

[phdargen]

Description

Removes requirements from payment response header to align ts with both the go implementation and the specifications at 5.3 SettlementResponse Schema

selectedRequirements info could be obtained from lifecycle hooks if needed

Closes #836

Tests

Checklist

• I have formatted and linted my code
• All new and existing tests pass
• My commits are signed (required for merge) -- you may need to rebase if you initially pushed unsigned commits

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[vercel]

@phdargen is attempting to deploy a commit to the Coinbase Team on Vercel.

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