diff --git a/core/misc/form.js b/core/misc/form.js
index 9bb9379..2437184 100644
--- a/core/misc/form.js
+++ b/core/misc/form.js
@@ -190,24 +190,4 @@ Drupal.behaviors.formUpdated = {
  }
 };
 
-/**
- * Prepopulate form fields with information from the visitor cookie.
- */
-Drupal.behaviors.fillUserInfoFromCookie = {
-  attach: function (context, settings) {
-    var userInfo = ['name', 'mail', 'homepage'];
-    $('form.user-info-from-cookie').once('user-info-from-cookie', function () {
-      var $formContext = $(this);
-      var i, il, $element, cookie;
-      for (i = 0, il = userInfo.length; i < il; i += 1) {
-        $element = $formContext.find('[name=' + userInfo[i] + ']');
-        cookie = $.cookie('Drupal.visitor.' + userInfo[i]);
-        if ($element.length && cookie) {
-          $element.val(cookie);
-        }
-      }
-    });
-  }
-};
-
 })(jQuery, Drupal, Drupal.debounce);
diff --git a/core/modules/comment/lib/Drupal/comment/CommentFormController.php b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
index c5afeeb..dd8a993 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentFormController.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
@@ -89,11 +89,6 @@ public function form(array $form, array &$form_state) {
     $anonymous_contact = $instance->getSetting('anonymous');
     $is_admin = $comment->id() && $this->currentUser->hasPermission('administer comments');
 
-    if (!$this->currentUser->isAuthenticated() && $anonymous_contact != COMMENT_ANONYMOUS_MAYNOT_CONTACT) {
-      $form['#attached']['library'][] = array('system', 'jquery.cookie');
-      $form['#attributes']['class'][] = 'user-info-from-cookie';
-    }
-
     // If not replying to a comment, use our dedicated page callback for new
     // Comments on entities.
     if (!$comment->id() && empty($comment->pid->target_id)) {
@@ -371,10 +366,6 @@ public function save(array $form, array &$form_state) {
     $uri = $entity->uri();
 
     if ($this->currentUser->hasPermission('post comments') && ($this->currentUser->hasPermission('administer comments') || $entity->{$field_name}->status == COMMENT_OPEN)) {
-      // Save the anonymous user information to a cookie for reuse.
-      if ($this->currentUser->isAnonymous()) {
-        user_cookie_save(array_intersect_key($form_state['values'], array_flip(array('name', 'mail', 'homepage'))));
-      }
 
       $comment->save();
       $form_state['values']['cid'] = $comment->id();
diff --git a/core/modules/contact/lib/Drupal/contact/MessageFormController.php b/core/modules/contact/lib/Drupal/contact/MessageFormController.php
index ca4a607..6c62359 100644
--- a/core/modules/contact/lib/Drupal/contact/MessageFormController.php
+++ b/core/modules/contact/lib/Drupal/contact/MessageFormController.php
@@ -44,13 +44,9 @@ public function form(array $form, array &$form_state) {
       '#title' => t('Your e-mail address'),
       '#required' => TRUE,
     );
-    if ($user->isAnonymous()) {
-      $form['#attached']['library'][] = array('system', 'jquery.cookie');
-      $form['#attributes']['class'][] = 'user-info-from-cookie';
-    }
     // Do not allow authenticated users to alter the name or e-mail values to
     // prevent the impersonation of other users.
-    else {
+    if (!$user->isAnonymous()) {
       $form['name']['#type'] = 'item';
       $form['name']['#value'] = $user->getUsername();
       $form['name']['#required'] = FALSE;
@@ -142,8 +138,6 @@ public function save(array $form, array &$form_state) {
       // take over the submitted form values.
       $sender->name = $message->getSenderName();
       $sender->mail = $message->getSenderMail();
-      // Save the anonymous user information to a cookie for reuse.
-      user_cookie_save(array('name' => $message->getSenderName(), 'mail' => $message->getSenderMail()));
       // For the e-mail message, clarify that the sender name is not verified; it
       // could potentially clash with a username on this site.
       $sender->name = t('!name (not verified)', array('!name' => $message->getSenderName()));
diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index cb0cb54..89da0d1 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -975,7 +975,6 @@ function system_library_info() {
       array('system', 'jquery'),
       array('system', 'drupal'),
       array('system', 'drupal.debounce'),
-      array('system', 'jquery.cookie'),
       array('system', 'jquery.once'),
     ),
   );
@@ -1201,19 +1200,6 @@ function system_library_info() {
     ),
   );
 
-  // jQuery BBQ plugin.
-  $libraries['jquery.bbq'] = array(
-    'title' => 'jQuery BBQ',
-    'website' => 'http://benalman.com/projects/jquery-bbq-plugin/',
-    'version' => '1.3pre',
-    'js' => array(
-      'core/assets/vendor/jquery-bbq/jquery.ba-bbq.js' => array(),
-    ),
-    'dependencies' => array(
-      array('system', 'jquery'),
-    ),
-  );
-
   // Dropbutton.
   $libraries['drupal.dropbutton'] = array(
     'title' => 'Dropbutton',
diff --git a/core/modules/tour/tour.module b/core/modules/tour/tour.module
index 16fe5f0..154696c 100644
--- a/core/modules/tour/tour.module
+++ b/core/modules/tour/tour.module
@@ -60,7 +60,6 @@ function tour_library_info() {
     ),
     'dependencies' => array(
       array('system', 'jquery'),
-      array('system', 'jquery.cookie'),
     ),
   );
 
diff --git a/core/modules/user/lib/Drupal/user/RegisterFormController.php b/core/modules/user/lib/Drupal/user/RegisterFormController.php
index d1e7e71..09f351f 100644
--- a/core/modules/user/lib/Drupal/user/RegisterFormController.php
+++ b/core/modules/user/lib/Drupal/user/RegisterFormController.php
@@ -44,9 +44,6 @@ public function form(array $form, array &$form_state) {
       return new RedirectResponse(url('user/' . $user->id(), array('absolute' => TRUE)));
     }
 
-    $form['#attached']['library'][] = array('system', 'jquery.cookie');
-    $form['#attributes']['class'][] = 'user-info-from-cookie';
-
     // Start with the default user account fields.
     $form = parent::form($form, $form_state, $account);
 
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 235d8fd..00e1511 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1766,29 +1766,6 @@ function user_modules_uninstalled($modules) {
 }
 
 /**
- * Saves visitor information as a cookie so it can be reused.
- *
- * @param $values
- *   An array of key/value pairs to be saved into a cookie.
- */
-function user_cookie_save(array $values) {
-  foreach ($values as $field => $value) {
-    // Set cookie for 365 days.
-    setrawcookie('Drupal.visitor.' . $field, rawurlencode($value), REQUEST_TIME + 31536000, '/');
-  }
-}
-
-/**
- * Delete a visitor information cookie.
- *
- * @param $cookie_name
- *   A cookie name such as 'homepage'.
- */
-function user_cookie_delete($cookie_name) {
-  setrawcookie('Drupal.visitor.' . $cookie_name, '', REQUEST_TIME - 3600, '/');
-}
-
-/**
  * Implements hook_file_download_access().
  */
 function user_file_download_access($field, EntityInterface $entity, File $file) {