DevTools: Remove ReactJS.org version check "cheat"#19939

Merged

bvaughn merged 2 commits intofacebook:masterfrom

sktguha:dev-cheat-url-update

Oct 1, 2020

Commits on Sep 30, 2020

update url in the check to reactjs.org for the development version cheat as the old facebook.github.io/react always redirects to reactjs.org
sktguha
committed

Commits on Oct 1, 2020

Remove dead code as facebook.github.io/react always redirects to reactjs.org, which has prod version of react. so removing this check
sktguha
committed