This is actually one of those default settings that some people overlook and it’s really a simple fix.
Removing the Quantity Field from Any WooCommerce Product
In a lot of cases, you don’t want customers having the option to choose more than a single quantity of certain products, or even services. But when you add a product, sure enough, it always shows by default.
Let’s take for example if you were selling a website package. Obviously most people wouldn’t buy more than one, so why confuse them?
Now a lot of people get frustrated as they think they will either need to add some snippet of code (which sends shivers down their spine), CSS or find the remove quantity field plugin to install (if such a thing exists). Fortunately when creating a product, it’s just a matter of toggling a box under your Inventory settings.
And this gives you a sans quantity field product in WooCommerce.
No plugin. No code snippet. No CSS.