Now that WordPress#5655 has landed, use inherited methods for getting…

… individual items.

src/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-revisions-controller.php

@@ -246,56 +246,6 @@ public function get_items( $request ) {
  return $response;
  }
 
- /**
- * Retrieves one global styles revision from the collection.
- *
- * @since 6.5.0
- *
- * @param WP_REST_Request $request Full details about the request.
- * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
- */
- public function get_item( $request ) {
- $parent = $this->get_parent( $request['parent'] );
- if ( is_wp_error( $parent ) ) {
- return $parent;
- }
-
- $revision = $this->get_revision( $request['id'] );
- if ( is_wp_error( $revision ) ) {
- return $revision;
- }
-
- $response = $this->prepare_item_for_response( $revision, $request );
- return rest_ensure_response( $response );
- }
-
- /**
- * Gets the global styles revision, if the ID is valid.
- *
- * @since 6.5.0
- *
- * @param int $id Supplied ID.
- * @return WP_Post|WP_Error Revision post object if ID is valid, WP_Error otherwise.
- */
- protected function get_revision( $id ) {
- $error = new WP_Error(
- 'rest_post_invalid_id',
- __( 'Invalid global styles revision ID.' ),
- array( 'status' => 404 )
- );
-
- if ( (int) $id <= 0 ) {
- return $error;
- }
-
- $revision = get_post( (int) $id );
- if ( empty( $revision ) || empty( $revision->ID ) || 'revision' !== $revision->post_type ) {
- return $error;
- }
-
- return $revision;
- }
-
  /**
  * Prepares the revision for the REST response.
  *