[RadioGroup] Update useRadioGroup.d.ts (#19001)

Author: NMinhNguyen

packages/material-ui/src/RadioGroup/useRadioGroup.d.ts

@@ -1,9 +1,6 @@
 import { Context } from 'react';
 import { RadioGroupProps } from './RadioGroup';
 
-// shut off automatic exporting
-export {};
-
 export interface RadioGroupState extends Pick<RadioGroupProps, 'name' | 'onChange' | 'value'> {}
 
 export default function useRadioGroup(): RadioGroupState;