diff --git a/backport-changelog/6.8/7642.md b/backport-changelog/6.8/7642.md
deleted file mode 100644
index f00d4a5473aac8..00000000000000
--- a/backport-changelog/6.8/7642.md
+++ /dev/null
@@ -1,3 +0,0 @@
-https://github.com/WordPress/wordpress-develop/pull/7642
-
-* https://github.com/WordPress/gutenberg/pull/66431
\ No newline at end of file
diff --git a/lib/compat/wordpress-6.8/remove-default-css.php b/lib/compat/wordpress-6.8/remove-default-css.php
deleted file mode 100644
index 1076d84f299214..00000000000000
--- a/lib/compat/wordpress-6.8/remove-default-css.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-function gutenberg_remove_default_css( $hook ) {
-	// Maybe also remove on post.php when Gutenberg is enabled for posts.
-	if ( 'site-editor.php' !== $hook ) {
-		return;
-	}
-	wp_dequeue_style( 'colors' );
-}
-
-add_action( 'admin_enqueue_scripts', 'gutenberg_remove_default_css' );
diff --git a/lib/load.php b/lib/load.php
index d2229a973142f1..574d901e72a69c 100644
--- a/lib/load.php
+++ b/lib/load.php
@@ -48,7 +48,6 @@ function gutenberg_is_experiment_enabled( $name ) {
 
 	// WordPress 6.8 compat.
 	require __DIR__ . '/compat/wordpress-6.8/preload.php';
-	require __DIR__ . '/compat/wordpress-6.8/remove-default-css.php';
 	require __DIR__ . '/compat/wordpress-6.8/block-comments.php';
 	require __DIR__ . '/compat/wordpress-6.8/class-gutenberg-rest-comment-controller-6-8.php';