Summary:
Removes the `isTVOS` check, which just duplicated and returned the `isTV` check anyway.
## Changelog
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[General] [Removed] - Remove deprecated `isTVOS` constant.
Pull Request resolved: https://github.com/facebook/react-native/pull/34071
Test Plan: Run against CI, and apply changes as needed.
Reviewed By: cipolleschi
Differential Revision: D37434978
Pulled By: cortinico
fbshipit-source-id: 2b38253125251b0ce28cf10c88471d8f16704999
Zachinquarantine
6075d64acf