Launch OS-Uninstaller, choose the system to remove, then click the "Apply" button. Can remove any Windows (XP, Vista, Windows7, Windows8) or (Debian, Ubuntu, Mint, Fedora, OpenSuse, ArchLinux...).
The program works only in LiveCD mode. To use the utility OS-Uninstaller, you should boot from the LiveCD=>Install=>Run and use.
sudo add-apt-repository ppa:yannubuntu/boot-repair sudo apt-get update sudo apt-get install -y os-uninstaller && os-uninstaller
Choose the OS you want to remove and click "OK"
A confirmation window will appear, Click "Apply" to start the removal.
Warning: the default settings of the Advanced Options are the recommended ones. Changing them may break your boot. Don't modify them before asking advice.
"Although personally I would not formatted the partition after remove the system. I would be better after the removal format via the program Gparted in my desired format."
When the removal is finished, reboot and check that your system has been removed.