Oops, I broke the build and have reverted the commit

From: Rick Macklem <rick.macklem_at_gmail.com>
Date: Mon, 05 May 2025 02:43:15 UTC
Oops, sorry I broke the build.
(I didn't realize that the nfsv4_pathconf structure
was used in userland.)

I have reverted the commit, so builds should be ok now.

Pointy hat goes on me, rick