How to disable creating links for content types?
I always use the Rabbit Hole module in this situation.


  Perhaps you have a content type that never should be displayed on its
  own page, like an image content type that's displayed in a carousel.
  Rabbit Hole can prevent this node from being accessible on its own
  page, through node/xxx.


You can set redirects from the pages too, so you can add a 301 or a 404 (for example)