Revert "Merge branch 'modprobe-fix' of git://github.com/abbradar/nixpkgs"

Was meant to go into staging, sorry

This reverts commit 57b2d1e9b0, reversing
changes made to 760b2b9048.

nixos/modules/services/network-filesystems/openafs-client/default.nix

@@ -80,7 +80,7 @@ in
       preStart = ''
         mkdir -p -m 0755 /afs
         mkdir -m 0700 -p ${cfg.cacheDirectory}
-        ${pkgs.kmod}/bin/insmod ${openafsPkgs}/lib/openafs/libafs-*.ko || true
+        ${pkgs.kmod}/sbin/insmod ${openafsPkgs}/lib/openafs/libafs-*.ko || true
         ${openafsPkgs}/sbin/afsd -confdir ${afsConfig} -cachedir ${cfg.cacheDirectory} ${if cfg.sparse then "-dynroot-sparse" else "-dynroot"} -fakestat -afsdb
         ${openafsPkgs}/bin/fs setcrypt ${if cfg.crypt then "on" else "off"}
       '';