Back out "reapply TextInput es6 conversion with fixes, attemps to fix"

Summary:
Back it out again. This time really not sure why this is breaking, but it seems to be production only. The error seems to be "RCTSinglelineTextInputView" was not found in the UIManager" but the relavent logic is not changed in this diff, just moved around, so unclear why it would trigger a failure.

Reverting to be safe. When we re-apply the diff, we'll need to test a full OTA to prod to verify the fix.

Reviewed By: blairvanderhoof

Differential Revision: D13108463

fbshipit-source-id: 5f877a0c1a08dc114ce45921d6d92bf619575977

Author: sahrens