message: Remove unused field on boundaries props
diff: import React from 'react';
  type BoundariesProps = {
  - children: JSX.Element[];
  min: number;
  max: number;
  reversed: boolean;
  @@ -12,7 +11,6 @@ type BoundariesProps = {
  class Boundaries extends React.Component<BoundariesProps, {}> {
  static defaultProps = {
  - children: [],
  min: 0,
  max: 100,
  reversed: false,
  