chore: Remove unused types file

[Gudahtt]

Explanation

This file is a duplicate of another in the src directory of this package, and is never referenced. The TSConfig file assumes there is no TypeScript outside of the src directory, so this fixes an error encountered on a different branch when adjusting the ESlint config.

References

Fixed error on PR #7078

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

---

Note

Removes unused duplicate packages/eip1193-permission-middleware/types.ts containing redundant enum definitions.

^{Written by Cursor Bugbot for commit 0d0e817. This will update automatically on new commits. Configure here.}