code: public static CPOption removeByG_K(long groupId, String key)
  		throws com.liferay.commerce.product.exception.NoSuchCPOptionException {
  		return getPersistence().removeByG_K(groupId, key);
  	}
docs: Removes the cp option where groupId = &#63; and key = &#63; from the database.
  
  @param groupId the group ID
  @param key the key
  @return the cp option that was removed