refactor: delete legacy code (standalone) as agreed upon in today's refinement

4 jobs for issue/make-language-switch-configurable in 5 minutes and 17 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Build
passed build_test #631959

00:02:28

 
  Deploy
passed pages #631960

00:01:06

passed pages:deploy

00:00:02

 
  Preserve Pages
passed pushback #631961

00:01:41