Possible Duplicate:
Is it possible to remove the dash window control buttons?
How can I remove Unity's Max/Min/Close buttons on the top left of the Dash?
Personally, I feel that they look out of place and since I never use them, I'd like to remove them.
The Ubuntu Tweak application can do that for you. You'll find it at:
You find what you want in the Tweaks tab under "Window Manager Settings". Within "Window Titlbar Button Layout" check the Customize box and then uncheck the boxes in "Enable control:".
