where to set no_header_css

-- url of the page with the problem -- : localhost
-- HikaShop version -- : 2.3.3
-- Joomla version -- : 3.3.6
-- Error-message(debug-mod must be tuned on) -- : no error message

Default Joomla installation
Default Hikashop installation with demo data
Created a menu item to a catalog view
When you look at the source code you can see header css added by Hikashop into <style>
This is done via administrator/components/com_hikashop/helpers/module.php in function setCSS on line 107
$doc->addStyleDeclaration($css);

In the same function there is an exit route created when you don't want header css to be set (line 26 - 29)
$config =& hikashop_config();
if($config->get('no_css_header',0)){
return true;
}

It seems that no_css_header is a configurable item and is set to 0 by default.

Where in Joomla backend can I find this setting?
I want no_css_header set to 1.
I don't want hikashop to add styling. It's my job as the developer to add the styling using less and then compile it.

Works like a charm.
Problem solved