feat(clerk-expo): Remove headers causing CORS errors

[thiskevinwang]

Description

This removes two headers, added in #2528, that are resulting in CORS errors being returned from the Clerk Frontend API.

Related:

• https://github.com/clerk/javascript/pull/2528#issuecomment-1962740121
• https://github.com/clerk/javascript/issues/2266

Checklist

• [ ] npm test runs as expected.
• [ ] npm run build runs as expected.
• [ ] (If applicable) JSDoc comments have been added or updated for any package exports
• [ ] (If applicable) Documentation has been updated

Type of change

• [ ] 🐛 Bug fix
• [ ] 🌟 New feature
• [ ] 🔨 Breaking change
• [ ] 📖 Refactoring / dependency upgrade / documentation
• [ ] other:

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 9e6b63f7b71c39237d9e68ff2b2e023d99a518ac

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@clerk/clerk-expo	Minor

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