productconfiguration, disable cos

app/UI/Admin/ProductConfiguration/Pages/ConfigForm.php

@@ -60,7 +60,7 @@ class ConfigForm extends FormIntegration implements AdminArea
         $this->addSection(new MimeFeatures());
 
         /** class of service features section **/
-        $this->addSection(new ClassOfServiceFeatures());
+//        $this->addSection(new ClassOfServiceFeatures());
 
         /** available features in ca **/
         $this->addSection(new ClientAreaFeatures());