Remove drupal2lektor script

Development for this script will be tracked in a separate project, at
https://gitlab.torproject.org/tpo/web/drupal2lektor
2 jobs for main in 3 minutes and 37 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Test
passed pages #32790

00:03:37

 
  Deploy
passed pages:deploy

00:00:05