chore: remove toString util

Author: geotrev

packages/dropdowns/src/elements/combobox/utils.ts

@@ -9,15 +9,6 @@ import { Children, ReactNode, isValidElement } from 'react';
 import { IOption, IUseComboboxProps } from '@zendeskgarden/container-combobox';
 import { IOptGroupProps, IOptionProps } from '../../types';
 
-/**
- * Convert an option object to a string.
- *
- * @param option An option of type `IOption`.
- *
- * @returns A string based on `option.value`.
- */
-export const toString = (option: IOption) => option.value;
-
 /**
  * Convert `Option` props to a valid object for `useCombobox`.
  *