luci-app-acme: remove handling of deprecated state_dir option

Recent versions of "acme" report the following message on startup:

    daemon.warn acme: Option "state_dir" is deprecated, please remove it.
                      Certificates now exist in /etc/ssl/acme

Solve this issue by removing the support for this deprecated option.

Fixes: #6273
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

applications/luci-app-acme/htdocs/luci-static/resources/view/acme.js

@@ -26,11 +26,6 @@ return view.extend({
 		s = m.section(form.TypedSection, "acme", _("ACME global config"));
 		s.anonymous = true;
 
-		o = s.option(form.Value, "state_dir", _("State directory"),
-			_("Where certs and other state files are kept."));
-		o.rmempty = false;
-		o.datatype = "directory";
-
 		o = s.option(form.Value, "account_email", _("Account email"),
 			_("Email address to associate with account key."))
 		o.rmempty = false;