No, PP doesn't remove anything unless you configure it to do so and even then not much, by itself anyway.
I was actually referring to the the special navigation features, ie., the ability to alter the playback order and only remove crap like the FBI warnings.

This way, you can retain what is virtually the full disc, but I have it configured so that when you pop in the bkup, the movie fires right up.
If you want to watch any special features or trailers, simply navigate to the menu.

Here's a screenshot...a picture is worth a 1000 words...