Submit button on not working.

chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js

Index: chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
diff --git a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
index 90b32bb132dc544cd30ea2556ca611ba67133742..54846ba3961c0d4cd01abaf0046312a21d1fa9b8 100644
--- a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
+++ b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
@@ -56,14 +56,6 @@ Polymer({
     return this.$$('#pin-input');
   },
 
-  /**
-   * Gets the submit button.
-   * @type {!HTMLElement}
-   */
-  get submitButton() {
-    return this.$$('.submit-button');
-  },
-
   /** Transfers focus to the input element. */
   focus: function() {
     this.$$('#pin-input').focus();