Remove Trigger E2E Tests on Comment (#47923)

Summary:
This action is no longer necessary and we can remove it

## Changelog:

[Internal] [Fixed] - Use `refs/pulls` namespace in trigger action

Pull Request resolved: https://github.com/facebook/react-native/pull/47923

Reviewed By: NickGerleman

Differential Revision: D66578573

Pulled By: cortinico

fbshipit-source-id: 87cdbc1544873a2669e82c7763c78d18ff7881fd