Resolve #3521059 "Finish deprecating 'Update Manager' related code in Update Status"

Closes #3521059

core/assets/scaffold/files/default.settings.php

@@ -475,30 +475,6 @@
  */
 # $settings['class_loader_auto_detect'] = FALSE;
 
-/**
- * Authorized file system operations:
- *
- * The Update Manager module included with Drupal provides a mechanism for
- * site administrators to securely install missing updates for the site
- * directly through the web user interface. On securely-configured servers,
- * the Update manager will require the administrator to provide SSH or FTP
- * credentials before allowing the installation to proceed; this allows the
- * site to update the new files as the user who owns all the Drupal files,
- * instead of as the user the webserver is running as. On servers where the
- * webserver user is itself the owner of the Drupal files, the administrator
- * will not be prompted for SSH or FTP credentials (note that these server
- * setups are common on shared hosting, but are inherently insecure).
- *
- * Some sites might wish to disable the above functionality, and only update
- * the code directly via SSH or FTP themselves. This setting completely
- * disables all functionality related to these authorized file operations.
- *
- * @see https://www.drupal.org/node/244924
- *
- * Remove the leading hash signs to disable.
- */
-# $settings['allow_authorize_operations'] = FALSE;
-
 /**
  * Default mode for directories and files written by Drupal.
  *