libnet_join.c: Don't set ACB_PWNOEXP for machine account

Does not set the "PasswordNeverExpires" on machine accounts since authpolicy is
going to periodically renew them.

crbug.com/777979.


diff --git a/source3/libnet/libnet_join.c b/source3/libnet/libnet_join.c
index 0595cfe..a356e40 100644
--- a/source3/libnet/libnet_join.c
+++ b/source3/libnet/libnet_join.c
@@ -1461,10 +1461,6 @@ static NTSTATUS libnet_join_joindomain_rpc(TALLOC_CTX *mem_ctx,
 		goto done;
 	}
 
-	/* Fill in the additional account flags now */
-
-	acct_flags |= ACB_PWNOEXP;
-
 	/* Set account flags on machine account */
 	ZERO_STRUCT(user_info.info16);
 	user_info.info16.acct_flags = acct_flags;