Add missing variable + RPT cleanup

fix 2 dup string warnings
fix "Cannot delete class rscdisplayinfo" warning.
Start extended vehicle damage debugging.

SQF/dayz_code/compile/object_vehicleKilled.sqf

@@ -1,9 +1,5 @@
 private ["_unit"];
 _unit =			_this select 0;
-//_killer =		_this select 1;
-//_type = typeOf _unit;
-//_pos = getposATL _unit;
-//_dir = direction _unit;
 if (local _unit) then {
 	deleteVehicle _unit;
 };