Summary:
This pull request moves `Text`'s prop types to the `DeprecatedPropTypes` folder.
This was already partly in progress - there were redundant `TextPropTypes` and `DeprecatedTextPropTypes` files so I removed one, and made sure the version with the doc strings was the one used.
## Changelog
[General] [Deprecated] - Move `Text` component's proptypes to DeprecatedPropTypes
Pull Request resolved: https://github.com/facebook/react-native/pull/26055
Test Plan: Flow checks pass for iOS and Android
Differential Revision: D16801078
Pulled By: TheSavior
fbshipit-source-id: ef19300945d48d0a4a83d728ee32cdf7d1c0f0cc
empyrical