Summary:
Also, remove ancient breaking changes details from 0.16 and before, as they only confused and distracted attention from the importance of seeking the information elsewhere.
Closes https://github.com/facebook/react-native/pull/12184

Differential Revision: D4507539

Pulled By: mkonicek

fbshipit-source-id: 9d0f274ac7e3141c9b535d3b156e98e1cf3659d3