Cleanup unused Javascript (#3027)

* chore(js): be stricter about dead code warnings

* chore(js): remove dead code and unused exports

* rebase

* chore: remove unused files

* chore(deps): remove unused prop-types dep

* chore(js): remove unused function

* chore(deps): remove + check unused deps

* chore(js): remove unused exports. Closes #3036

web/components/ui/Content/Content.tsx

@@ -308,4 +308,3 @@ export const Content: FC = () => {
     </>
   );
 };
-export default Content;