How to disable "overlay-scrollbar" in Ubuntu 12.04 and 12.10

Here are simple steps on how to remover Ubuntu's overlay scrollbar for Ubuntu 12.04 and 12.10. Note that the steps are different for both versions.

12.04
For this version we will need to remove the package for the overlay scrollbar. Your system might have a different version. You can find what version you have with the following command:

dpkg -l | grep overlay

Then remove the following packages:

sudo apt-get remove overlay-scrollbar liboverlay-scrollbar-0.2-0 liboverlay-scrollbar3-0.2-0

12.10
For 12.10 it's just a setting that can be disabled with:

gsettings set com.canonical.desktop.interface scrollbar-mode normal

And to restore:

gsettings set com.canonical.desktop.interface scrollbar-mode overlay-auto