Remove incorrect role from error message

Author: edwardhorsford

src/components/form-elements/error-message/ErrorMessage.tsx

@@ -12,7 +12,7 @@ const ErrorMessage: FC<ErrorMessageProps> = ({
   role = 'alert',
   ...rest
 }) => (
-  <span className={classNames('nhsuk-error-message', className)} role={role} {...rest}>
+  <span className={classNames('nhsuk-error-message', className)} {...rest}>
     {visuallyHiddenText !== false ? (
       <span className="nhsuk-u-visually-hidden">{visuallyHiddenText}</span>
     ) : null}