How to purge psmouse-alps-dst-0.4 driver?

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http://askubuntu.com – After installing psmouse-alps-dst-0.4 driver for my Dell 5720 touchpad from here : http://www.dahetral.com/public-download I decided to uninstall it. I removed /usr/src/psmouse-alps-dst-0.4 folder, removed psmouse from dkms and did sudo rmmod psmouse followed by modprobe psmouse proto=imps, driver works as default one but after reboot alps one is still here. After I did it all xinput command gives me the following: Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ PS/2 Generi (HowTos)