pccarddevs2h.awk: Remove
pccard support was removed in 31b35400cf77on Dec 14, 2021, but this
wasn't. Belatedly remove it.
MFC After: 1 week
Sponsored by: Netflix
(cherry picked from commit 67dd7233bef66f722ad0325b4b81fe7a12c573be)
Approved by: re (cperciva@)