Issue #1983554 by plach, effulgentsia, Berdir: Remove BC-mode from EntityNG .

core/lib/Drupal/Core/Entity/DatabaseStorageController.php

core/lib/Drupal/Core/Entity/DatabaseStorageControllerNG.php

core/lib/Drupal/Core/Entity/Entity.php

core/lib/Drupal/Core/Entity/EntityBCDecorator.php

core/lib/Drupal/Core/Entity/EntityFormController.php

core/lib/Drupal/Core/Entity/EntityInterface.php

core/lib/Drupal/Core/Entity/EntityNG.php

...upal/Core/Entity/FieldableEntityStorageControllerBase.php

...ib/Drupal/Core/Entity/Plugin/DataType/EntityReference.php

core/lib/Drupal/Core/Entity/Query/Sql/Tables.php

core/modules/content_translation/content_translation.module

...modules/content_translation/content_translation.pages.inc

...upal/content_translation/FieldTranslationSynchronizer.php

...content_translation/Tests/ConfigTestTranslationUITest.php

...al/content_translation/Tests/ContentTranslationUITest.php

core/modules/field/field.attach.inc

core/modules/field/field.deprecated.inc

core/modules/field/field.module

core/modules/field/field.multilingual.inc

...les/field/lib/Drupal/field/Tests/FieldAttachOtherTest.php