diff --git a/core/modules/language/src/ConfigurableLanguageInterface.php b/core/modules/language/src/ConfigurableLanguageInterface.php
index b4a1801..a4b794e 100644
--- a/core/modules/language/src/ConfigurableLanguageInterface.php
+++ b/core/modules/language/src/ConfigurableLanguageInterface.php
@@ -16,16 +16,4 @@
  */
 interface ConfigurableLanguageInterface extends ConfigEntityInterface, LanguageInterface {
 
-  /**
-   * Set values from using the provided Language object.
-   *
-   * @param \Drupal\Core\Language\Language $language
-   *   The language object to get the values from.
-   *
-   * @return $this
-   *
-   * @see language_save()
-   */
-  public function setValuesFromLanguage(Language $language);
-
 }
diff --git a/core/modules/language/src/Entity/ConfigurableLanguage.php b/core/modules/language/src/Entity/ConfigurableLanguage.php
index 395710d..2f95b9e 100644
--- a/core/modules/language/src/Entity/ConfigurableLanguage.php
+++ b/core/modules/language/src/Entity/ConfigurableLanguage.php
@@ -196,25 +196,6 @@ protected function toLanguageObject() {
   }
 
   /**
-   * Converts the ConfigurableLanguage entity to a Core Language value object.
-   *
-   * @todo fix return type hint after https://drupal.org/node/2246665 and
-   *   https://drupal.org/node/2246679.
-   *
-   * @return \Drupal\Core\Language\LanguageInterface
-   *   The language configuration entity expressed as a Language value object.
-   */
-  public function setValuesFromLanguage(Language $language) {
-    $this->label = $language->getName();
-    $this->direction = $language->getDirection();
-    $this->default = $language->isDefault();
-    $this->weight = $language->getWeight();
-    $this->locked = $language->locked;
-
-    return $this;
-  }
-
-  /**
    * {@inheritdoc}
    *
    * @throws \DeleteDefaultLanguageException
diff --git a/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php b/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
index e1db87d..7b72636 100644
--- a/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
+++ b/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
@@ -47,37 +47,4 @@ public function testWeight() {
     $this->assertEquals($configurableLanguage->getWeight(), $weight);
   }
 
-  /**
-   * @covers ::setValuesFromLanguage
-   */
-  public function testSetValuesFromLanguage() {
-    // Mock the entity manager and create an entity type so that
-    // ConfigurableLanguage::getName() works.
-    $entityType = new EntityType(array('id' => 'configurable_language', 'entity_keys' => array('id' => 'id', 'label' => 'label')));
-    $entityManager = $this->getMock('\Drupal\Core\Entity\EntityManagerInterface');
-    $entityManager->expects($this->any())
-      ->method('getDefinition')
-      ->with('configurable_language')
-    ->will($this->returnValue($entityType));
-    $container = new ContainerBuilder();
-    $container->set('entity.manager', $entityManager);
-    \Drupal::setContainer($container);
-
-    $language = new Language(array(
-      'id' => $this->randomMachineName(2),
-      'weight' => 8,
-      'name' => $this->randomMachineName(),
-      'direction' => Language::DIRECTION_RTL,
-      'default' => TRUE,
-      'locked' => TRUE,
-    ));
-
-    $configurableLanguage = new ConfigurableLanguage(array(), 'configurable_language');
-    $configurableLanguage->setValuesFromLanguage($language);
-    $this->assertSame($language->getWeight(), $configurableLanguage->getWeight());
-    $this->assertSame($language->getName(), $configurableLanguage->getName());
-    $this->assertSame($language->getDirection(), $configurableLanguage->getDirection());
-    $this->assertSame($language->isDefault(), $configurableLanguage->isDefault());
-  }
-
 }