Remove unnecessary $posts_per_page global in admin.php
|Reported by:||nacin||Owned by:|
First discussed in #11385.
There is an orphaned $posts_per_page = get_option('posts_per_page') in the admin.php bootstrap. The variable is never used and appears to be an artifact that is left over from before the time of screen options.
The posts_per_page option is the reading option for the number of posts to display per page in a theme.
In the off-chance a plugin used this variable, it is overwritten in post.php anyway, and would provide incorrect values on any other page, as they have their own *_per_page user options. As of  they also have a complete set of filters as well.
If someone feels that broken back compat is necessary here, then we can wontfix.