Removing: bktr(4) Brooktree Video Capture card

[Mark Linimon]

bktr(4) is a card that allowed people (including me) to have a small
window running in which I could watch my cable TV feed.  Its usable
timeframe was around 18-24 months.

I have not used my own card since it was last installed in a machine
which IIRC was running Windows 2000.

Please go back and look at the original proposal; it detailed what we
look for when deprecate things.

mcl