samba36: Remove guest ok since LuCI configures it.

guest ok is set per share and as such, don't override it. also, fix an error introduced in the last commit.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

package/network/services/samba36/files/smb.conf.template

@@ -8,10 +8,9 @@
 	bind interfaces only = yes
 	deadtime = 30
 	enable core files = no
-	guest ok = yes
 	invalid users = root
 	load printers = no
-	local master = yes
+	local master = no
 	map to guest = Bad User
 	max protocol = SMB2
 	min receivefile size = 16384