diff --git a/core/lib/Drupal/Core/TempStore/TempStore.php b/core/lib/Drupal/Core/TempStore/TempStore.php
index 0421a19..e425485 100644
--- a/core/lib/Drupal/Core/TempStore/TempStore.php
+++ b/core/lib/Drupal/Core/TempStore/TempStore.php
@@ -113,29 +113,6 @@ public function deleteMultiple(array $keys, $all = FALSE) {
   }
 
   /**
-   * Implements Drupal\Core\TempStore\TempStoreInterface::getLockOwner().
-   */
-  public function getLockOwner($key) {
-    return db_query(
-      'SELECT owner_id AS ownerID, updated FROM {temp_store} WHERE namespace = :namespace AND temp_key = :temp_key ORDER BY updated ASC',
-      array(
-        ':namespace' => $this->namespace,
-        ':temp_key' => $key,
-      )
-    )->fetchObject();
-  }
-
-  /**
-   * Implements Drupal\Core\TempStore\TempStoreInterface::isLocked().
-   */
-  public function isLocked($key) {
-    $lock_owner = $this->getLockOwner($key);
-    if ((isset($lock_owner->ownerID) && $this->ownerID != $lock_owner->ownerID)) {
-      return $lock_owner;
-    }
-  }
-
-  /**
    * Implements Drupal\Core\TempStore\TempStoreInterface::testStoredObjects().
    */
   public static function testStoredObjects($namespace, array $keys) {
diff --git a/core/lib/Drupal/Core/TempStore/TempStoreInterface.php b/core/lib/Drupal/Core/TempStore/TempStoreInterface.php
index 53f9925..eafd639 100644
--- a/core/lib/Drupal/Core/TempStore/TempStoreInterface.php
+++ b/core/lib/Drupal/Core/TempStore/TempStoreInterface.php
@@ -75,32 +75,6 @@ public function deleteAll($key);
   public function deleteMultiple(array $keys, $all = FALSE);
 
   /**
-   * Determines if the object is in use by another store for locking purposes.
-   *
-   * @param string $key
-   *   The key to the stored object. See TempStoreInterface::set() for details.
-   * @param bool $exclude_owner
-   *   (optional) Whether or not to disregard the current user when determining
-   *   the lock owner. Defaults to FALSE.
-   *
-   * @return stdClass|null
-   *   An object with the user ID and updated date if found, otherwise NULL.
-   */
-  public function getLockOwner($key);
-
-  /**
-   * Checks to see if another owner has locked the object.
-   *
-   * @param string $key
-   *   The key to the stored object. See TempStoreInterface::set() for details.
-   *
-   * @return stdClass|null
-   *   An object with the owner ID and updated date, or NULL if there is no
-   *   lock on the object belonging to a different owner.
-   */
-  public function isLocked($key);
-
-  /**
    * Fetches the last updated time for multiple objects in a given namespace.
    *
    * @param string $namespace
diff --git a/core/modules/system/lib/Drupal/system/Tests/TempStore/TempStoreTest.php b/core/modules/system/lib/Drupal/system/Tests/TempStore/TempStoreTest.php
index fe44614..ba767d4 100644
--- a/core/modules/system/lib/Drupal/system/Tests/TempStore/TempStoreTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/TempStore/TempStoreTest.php
@@ -158,42 +158,6 @@ public function testUserTempStore() {
       $temp_store->get($new_key),
       'An entry less than 7 days old is not cleaned.'
     );
-
-    // Test the getLockOwner() method.
-    $temp_store_one = new UserTempStore($namespace, $this->loggedInUser->uid);
-
-    // Allow two users to be logged in at once.
-    $this->curlClose();
-    $this->loggedInUser = FALSE;
-
-    $this->drupalLogin($this->secondUser);
-
-    // Add another stored object to the original user's data store.
-    $key_first_user = $this->randomName();
-    $temp_store_one->set($key_first_user, $this->randomObject());
-
-    // Add a data store for the second user and store an object to it.
-    $temp_store_two = new UserTempStore($namespace, $this->loggedInUser->uid);
-    $key_second_user = $this->randomName();
-    $temp_store_two->set($key_second_user, $this->randomObject());
-
-    // Confirm that the data is correctly saved for both users.
-    $this->assertEqual(
-      $temp_store_one->getLockOwner($key_first_user)->ownerID,
-      $this->firstUser->uid,
-      format_string(
-        'Object %key is locked by user %user',
-        array('%key' => $key_first_user, '%user' => $this->firstUser->uid)
-      )
-    );
-    $this->assertEqual(
-      $temp_store_two->getLockOwner($key_second_user)->ownerID,
-      $this->secondUser->uid,
-      format_string(
-        'Object %key is locked by user %user',
-        array('%key' => $key_first_user, '%user' => $this->firstUser->uid)
-      )
-    );
   }
 
 }
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index cce2558..5bf075a 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -2017,7 +2017,7 @@ function system_update_8021() {
 /**
  * Create the 'temp_store' table.
  */
-function system_update_8018() {
+function system_update_8022() {
   $table = array(
     'description' => t('A temporary data store for objects that are being edited. Allows state to be saved in a stateless environment.'),
     'fields' => array(