diff --git a/lib/compat/wordpress-6.3/class-gutenberg-rest-global-styles-controller-6-3.php b/lib/compat/wordpress-6.3/class-gutenberg-rest-global-styles-controller-6-3.php
index 5eeb0a1014aed..09b0f4ec65dbf 100644
--- a/lib/compat/wordpress-6.3/class-gutenberg-rest-global-styles-controller-6-3.php
+++ b/lib/compat/wordpress-6.3/class-gutenberg-rest-global-styles-controller-6-3.php
@@ -10,14 +10,6 @@
  * Base Global Styles REST API Controller.
  */
 class Gutenberg_REST_Global_Styles_Controller_6_3 extends Gutenberg_REST_Global_Styles_Controller_6_2 {
-	/**
-	 * Revision controller.
-	 *
-	 * @since 6.3.0
-	 * @var WP_REST_Revisions_Controller
-	 */
-	private $revisions_controller;
-
 	/**
 	 * Prepares links for the request.
 	 *