REST API: Remove WP_Test_REST_Widgets_Controller tests.

This test suite is causing a loop in PHP8, remove tests to investigate.

Props SergeyBiryukov, desrosj.
See #41683.


Built from https://develop.svn.wordpress.org/trunk@51020


git-svn-id: http://core.svn.wordpress.org/trunk@50629 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.8-alpha-51019';
+$wp_version = '5.8-alpha-51020';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.