dillon1000/react

Devtools:-Removed unused CSS (#27032)

I tried to check out for the CSS bundle using the
[eslint-plugin-css-modules](https://www.npmjs.com/package/eslint-plugin-css-modules),
and ran it locally , seems like There are lot of unused styles and
classes present .
I have attached the output below after running the lint command.

https://gist.github.com/Biki-das/647ceb7383b43cca9c8619e1dc33fe0d

All the shared.css files should not be touched i feel as they are being
used randomly by some file

Thoughts @hoxyq