Removed prop-types.

components/common/Tag.js

@@ -1,4 +1,3 @@
-import PropTypes from 'prop-types';
 import classNames from 'classnames';
 import styles from './Tag.module.css';
 
@@ -6,9 +5,4 @@ function Tag({ className, children }) {
   return <span className={classNames(styles.tag, className)}>{children}</span>;
 }
 
-Tag.propTypes = {
-  className: PropTypes.string,
-  children: PropTypes.node,
-};
-
 export default Tag;