You can uninstall language packs without uninstalling the main product.
Note: The default language that was installed with the product cannot be separately uninstalled.
You can uninstall language packs in the same way that you uninstall products. Go to the Windows Control Panel where products are listed, and click the language pack that you want to uninstall.
Alternately, uninstall the language packs using the Autodesk Uninstall Tool.
Uninstalling a language pack