NLM: Remove AF_UNSPEC arm in nlm_display_address()

AF_UNSPEC support is no longer needed in nlm_display_address() now
that a presentation address is no longer generated for the h_srcaddr
field.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

fs/lockd/host.c

@@ -112,9 +112,6 @@ static void nlm_display_address(const struct sockaddr *sap,
 	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
 
 	switch (sap->sa_family) {
-	case AF_UNSPEC:
-		snprintf(buf, len, "unspecified");
-		break;
 	case AF_INET:
 		snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
 		break;