Getting rid of the Preference pane would only remove the interface between you and the software.
Do you have some sort of problem with your computer that leads you to believe that the trackpad software is corrupt or did you install some third party software to drive a stand alone trackpad.?
P
Does anyone know how to remove the Trackpad software?
If I go to System/Library/PreferencePanes and delete Trackpad.prefPane, after deleting it from Bluetooth preference, the system preference do not open.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic