Remove stale comments from helper scripts

plugins/hosts/windows/scripts/set_share.ps1

@@ -4,8 +4,6 @@ $objUser = $objSID.Translate([System.Security.Principal.NTAccount])
 
 $grant = "$objUser,Full"
 
-# First we split the defs string by commas to get
-# each group of parameters
 for ($i=0; $i -le $args.length; $i = $i + 3) {
     $path = $args[$i]
     $share_name = $args[$i+1]

plugins/hosts/windows/scripts/unset_share.ps1

@@ -1,4 +1,3 @@
-# Share names are comma delimited
 ForEach ($share_name in $args) {
     $result = net share $share_name /DELETE
     if ($LastExitCode -ne 0) {