diff --git a/src/wp-includes/class-wp-customize-nav-menus.php b/src/wp-includes/class-wp-customize-nav-menus.php
index 3772496388..340b367ffb 100644
--- a/src/wp-includes/class-wp-customize-nav-menus.php
+++ b/src/wp-includes/class-wp-customize-nav-menus.php
@@ -292,7 +292,6 @@ final class WP_Customize_Nav_Menus {
 				'custom_label'      => __( 'Custom Link' ),
 				/* translators: %s: Current menu location */
 				'menuLocation'      => __( '(Currently set to: %s)' ),
-				'deleteWarn'        => __( 'You are about to permanently delete this menu. "Cancel" to stop, "OK" to delete.' ),
 				'itemAdded'         => __( 'Menu item added' ),
 				'itemDeleted'       => __( 'Menu item deleted' ),
 				'menuAdded'         => __( 'Menu created' ),