Remove mentions of mw.htmlform.Checker

mw.htmlform.Checker was removed in 743edb1
and no longer exists

Change-Id: Id269f63fd3ca64a719745868d6df907548c15fad

includes/htmlform/HTMLFormField.php

@@ -1160,9 +1160,6 @@ abstract class HTMLFormField {
 	 * @since 1.18
 	 */
 	protected static function formatErrors( $errors ) {
-		// Note: If you change the logic in this method, change
-		// htmlform.Checker.js to match.
-
 		if ( is_array( $errors ) && count( $errors ) === 1 ) {
 			$errors = array_shift( $errors );
 		}

resources/src/mediawiki.htmlform.ooui/Element.js

@@ -1,6 +1,5 @@
 ( function () {
 
-	// FIXME: mw.htmlform.Checker also sets this to empty object
 	mw.htmlform = {};
 
 	/**

resources/src/mediawiki.special.createaccount/HtmlformChecker.js

@@ -2,7 +2,7 @@
  * A helper class to add validation to non-OOUI HtmlForm fields.
  *
  * @private
- * @class mw.htmlform.Checker
+ * @class HtmlformChecker
  *
  * @constructor
  * @param {jQuery} $element Form field generated by HTMLForm
@@ -32,7 +32,7 @@ function HtmlformChecker( $element, validator ) {
  *
  * @param {jQuery} [$extraElements] Additional elements to listen for change
  *  events on.
- * @return {mw.htmlform.Checker}
+ * @return {HtmlformChecker}
  * @chainable
  */
 HtmlformChecker.prototype.attach = function ( $extraElements ) {
@@ -102,7 +102,7 @@ HtmlformChecker.prototype.validate = function () {
  *  `<div>` or `<li>`, as with jQuery.append().
  * @param {boolean} [forceReplacement] Set true to force a visual replacement even
  *  if the errors are the same. Ignored if errors are empty.
- * @return {mw.htmlform.Checker}
+ * @return {HtmlformChecker}
  * @chainable
  */
 HtmlformChecker.prototype.setErrors = function ( valid, errors, forceReplacement ) {