s4-torture: remove obsolete comment in libsmbclient torture suite.

s4-torture: remove obsolete comment in libsmbclient torture suite.

Since smbc_setX calls now handle string allocation using malloc
themselves (since commit 2d41b1ab78639abe4ae030ff482573f464564dd7) we
indeed no longer need to provide malloced strings (the extra malloc
already got removed earlier).

Guenther

Signed-off-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Oct 30 21:09:14 CET 2017 on sn-devel-144