[types] Remove CoerceEmptyInterface

[eps1lon]

BREAKING: Remove CoerceEmptyInterface from @material-ui/types. We don't need it in any of our packages. If you need it you can introduce it into your app:

/**	
 * Returns an empty object type if T is any, otherwise returns T	
 */	
export type CoerceEmptyInterface<T> = IsAny<T> extends true ? {} : T;

Ref: eps1lon/mui-types-perf#1 (comment)

[mui-pr-bot]

No bundle size changes comparing c8d9df0...066d883

Generated by 🚫 dangerJS against 066d883