Remove shelljs dependency and duplicated scripts in files (#33915)
Remove shelljs dependency and duplicated scripts in files (#33915)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/33915

We don't need to import shelljs as a dependency anymore,
plus we had a duplicated entry in the files array for package.json

Changelog:
[Internal] [Changed] - Remove shelljs dependency and duplicated scripts in files

Reviewed By: dmitryrykun

Differential Revision: D36698750

fbshipit-source-id: 94f449f2c3c5d73d0f9ffd29df6b26f5fd6ef129

facebook/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,javache/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,janicduplessis/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,facebook/react-native,facebook/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,javache/react-native,facebook/react-native