You could use Advanced Products Display (APD) and not include the stock field.
As MartiniGuy pointed out, you can tweak a lot of the settings and still use the default product layout, including choosing not to show stock.
For example, under Site-Wide Settings > System Options you have the following settings:
Allow Purchase when Quantity in Stock is Less Than Zero -- Yes/No
Hide Products If Not In Stock -- Yes/No
In the product editor for each product, you also have the choice of setting the display options for inventory levels. You can choose:
- None
- In Stock (Y/N)
- Item Count
On our store, I set the label for the count field to Available? If a product is a current production item but drop ships, I set the display options to "In Stock (Y/N)". If it's a stock item, I use the item account.
Hope that helps.