I make child themes based on the 2011 Theme. I often want to remove some pages, such as "author.php", and this is easy - just delete them from both the child and the parent theme. However when 2011 gets updated, the author.php file will get added again.
There must be functions that allow you to set pages that WP will ignore, such as category archives, or author pages. Basic unique templates are easy to remove, but core pages don't seem to be easy.
In any case I would like to remove them properly, and know that future upgrades and updates won't undo my work.