Remove void from React.ComponentClass<P | void>
Remove void from React.ComponentClass<P | void>

Not needed anymore thx to https://github.com/DefinitelyTyped/DefinitelyTyped/pull/17288
void was introduced in #193

mobxjs/mobx-react,mweststrate/mobservable-react,mobxjs/mobx-react,mweststrate/mobservable-react