I am developing an events manager for Wordpress.
I have post_type = 'event' and taxonomy 'event_place'
And I want delete block with taxonomy select in post page, because user can do it at custom metabox.
And hook it to 'admin_menu' as in the Codex.
I am guessing a little at the first parameter--'categorydiv'--, but that is what it looks like based on your screen shot.