I may be misunderstanding, but to remove items from Finder's menu bar is quite simple:
 
Hold down the <kbd>Command</kbd> and drag the icon from the menu bar. Poof! It's gone. 

This works for all Apple based menu bar items, and some third party items. Usually, when it doesn't work for a third party application, there is an option within the app itself to remove its icon from the menu bar.