Update priv(9) after r341827

Reported by:	trasz
Sponsored by:	The FreeBSD Foundation

share/man/man9/priv.9

@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd August 30, 2006
+.Dd December 19, 2018
 .Dt PRIV 9
 .Os
 .Sh NAME
@@ -39,7 +39,7 @@
 .Ft int
 .Fn priv_check "struct thread *td" "int priv"
 .Ft int
-.Fn priv_check_cred "struct ucred *cred" "int priv" "int flags"
+.Fn priv_check_cred "struct ucred *cred" "int priv"
 .Sh DESCRIPTION
 The
 .Nm
@@ -57,9 +57,6 @@ policy or access control list.
 The caller identifies the desired privilege via the
 .Fa priv
 argument.
-The optional flags argument,
-.Fa flags ,
-is currently unused.
 .Ss Privilege Policies
 Privileges are typically granted based on one of two base system policies:
 the superuser policy, which grants privilege based on the effective (or