I would be interested in finding out if this is possible too.
I found a way that should remove the blog from a place (although in our case it does not work for some reason):
Step 1: Click on the "Manage" button and select "Settings"
Step 2: On the next page click on "About"
Step 3: Choose "Advanced Options", there you have the option to activate/deactivate the blog option
Hope this helps!