Commenting out Unneeded options in Vtiger admin settings pag

To better focus my organizations efforts inside the admin section I would like the following commented out of the Admin settings page so that the user will be unable to see these options: Customer Portal Inventory: Terms & Conditions Backup Server Tax Calculations Currencies Inventory Notifications These also need to be eliminated from the side column options shown on the left hand side in many different menus. Budget is very tight on this and since time should be minimal to just comment these out I'd expect bidding to be inline.