adj: propdata has moved to kv3

[kristiker]

hlvr accepts it as-is (this is also unhandled)

File location: scripts/propdata.vdata

<!-- kv3 encoding:text:version{e21c7f3c-8a33-41c5-9977-a76d3a32aa0d} format:generic:version{7412167c-06e9-4698-aff2-e63eb59037e7} -->
{
    generic_data_type = "prop_data"
    Cardboard.Base = 
    {
        _not_pickable = 1
        dmg.bullets = 0.500000
        dmg.club = 1.250000
        dmg.explosive = 1.500000
    }
    Cardboard.Small = 
    {
        dmg.bullets = 0.500000
        dmg.club = 1.250000
        dmg.explosive = 1.500000
        _base = "Cardboard.Base"
        health = 10
    }
    Cardboard.Medium = 
    {
        dmg.bullets = 0.500000
        dmg.club = 1.250000
        dmg.explosive = 1.500000
        _base = "Cardboard.Base"
        health = 20
    }
}