feat: remove unused features barrel file for better performance (calcom#23456)

- Remove packages/features/index.ts barrel file that only exported ee namespace
- No imports were found using this barrel file - all imports use specific module paths
- This improves performance by eliminating unnecessary exports from ee folder
- Type checking passes confirming no breaking changes

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: keithwillcode

packages/features/index.ts

@@ -1 +0,0 @@
-export * as ee from "./ee";