man/doveconf: Remove -S parameter

Author: sirainen

docs/core/man/doveconf.1.md

@@ -9,7 +9,7 @@ dovecotComponent: core
 ## SYNOPSIS
 
 **doveconf**
-  [**-adnPNSx**]
+  [**-adnPNx**]
   [**-c** *config-file*]
   [**-f** *filter*]
 
@@ -85,9 +85,6 @@ configuration in easy human readable output.
 **-N**
 :   Show settings with non-default values and explicitly set default values.
 
-**-S**
-:   Dump settings in simplified machine parsable/readable format.
-
 **-s**
 :   Show also hidden settings. The hidden settings should not be changed
     normally.