code: public static Single<Boolean> delete(CacheConfigBean cacheConfigBean, String cacheKey) {
          return CacheObjectUtil.remove(cacheConfigBean, cacheKey);
      }
docs: delete the cached list
  
  @param cacheConfigBean the data source of the cache system.
  @param cacheKey        the key for the cached list.
  @return false if nothing deleted, true if deleted successfully.