Index: wp-admin/includes/class-wp-site-health.php
===================================================================
--- wp-admin/includes/class-wp-site-health.php	(revision 56650)
+++ wp-admin/includes/class-wp-site-health.php	(working copy)
@@ -1288,12 +1288,9 @@
 	 *
 	 * @since 5.2.0
 	 *
-	 * @global wpdb $wpdb WordPress database abstraction object.
-	 *
 	 * @return array The test results.
 	 */
 	public function get_test_utf8mb4_support() {
-		global $wpdb;
 
 		if ( ! $this->mysql_server_version ) {
 			$this->prepare_sql_data();