Removed unused/old/pre-refactor settings

•Removed:
- unused/old/pre-refactor settings

config/settings.yml

@@ -27,11 +27,9 @@ defaults: &defaults
   preview_sensitive_media: false
   reduce_motion: false
   show_application: true
-  system_font_ui: false
   noindex: false
   theme: 'default'
   aggregate_reblogs: true
-  advanced_layout: false
   notification_emails:
     follow: false
     reblog: false