Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42233
This diff removes the need for providing the `ios_folder` argument to `use_react_native`. We no longer do any manual path tranformations to get the iOS project root.
Instead we use `Pod::Config.instance.installation_root` which always points to the correct directory.
Changelog: [iOS][Breaking] - CocoaPods: remove the `ios_folder` argument from the `use_react_native` function.
Reviewed By: cipolleschi
Differential Revision: D52659429
fbshipit-source-id: 67c79cd9d74a0351ad2c242b74cbd48b6bd2dc94