How do I turn off the samba3 errors?

[Aaron Solochek]

There are some parameters in my smb.conf, such as "server role" that I need for
samba4, but are causing errors like this in my samba log, which grows to over a
hundred MB in only a couple of days:

[2011/10/26 19:21:04,  0] ../source3/param/loadparm.c:7356(lp_do_parameter)
  Ignoring unknown parameter "server role"
[2011/10/26 19:21:04,  0] ../source3/param/loadparm.c:7356(lp_do_parameter)
  Ignoring unknown parameter "tls enabled"
[2011/10/26 19:21:04,  0] ../source3/param/loadparm.c:7356(lp_do_parameter)
  Ignoring unknown parameter "tls keyfile"
[2011/10/26 19:21:04,  0] ../source3/param/loadparm.c:7356(lp_do_parameter)
  Ignoring unknown parameter "tls certfile"


How do I prevent that crap from being logged?

-Aaron