Twenty Twenty: Use `jshint` exclude statements instead of `eslint`.

Also, exclude the `node_modules` folder within `twentytwentyone`.

See #51526.

git-svn-id: https://develop.svn.wordpress.org/trunk@49250 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentytwentyone/assets/js/customize-helpers.js

@@ -5,7 +5,7 @@
  *
  * @return {number} - Returns the luminance, number between 0 and 255.
  */
-function twentytwentyoneGetHexLum( hex ) { // eslint-disable-line no-unused-vars
+function twentytwentyoneGetHexLum( hex ) { // jshint ignore:line
 	var rgb = twentytwentyoneGetRgbFromHex( hex );
 	return Math.round( ( 0.2126 * rgb.r ) + ( 0.7152 * rgb.g ) + ( 0.0722 * rgb.b ) );
 }

src/wp-content/themes/twentytwentyone/assets/js/primary-navigation.js

@@ -38,7 +38,7 @@ function twentytwentyoneCollapseMenuOnClickOutside( event ) {
  *
  * @param {Element} el - The element.
  */
-function twentytwentyoneExpandSubMenu( el ) { // eslint-disable-line no-unused-vars
+function twentytwentyoneExpandSubMenu( el ) { // jshint ignore:line
 	// Close submenu that was opened from a hover action.
 	// We'll return early in this case to avoid changing the aria-expanded attribute.
 	if ( el.parentNode.classList.contains( 'hover' ) ) {