When you import local asset packages, the Unity Editor places them in the Assets
directory in your project.
You can manually remove assets from a project if you know the assets aren’t in use. You might consider this action to unclutter your project directory or to free up space on your local hard drive.
Warning: Make sure your project isn’t using any of the assets you remove. Unlike installed packages, the Package Manager doesn’t track assets that you imported from local asset packages, so it can’t detect when you remove dependent assets.
Make sure you understand these important notes before you begin:
To remove one or more local asset package items from your project:
Open your project.
Open the Package Manager window.
Open the Packages menu and select the My Assets context.
Select the package you want to remove from your project and take note of the package name (A) and the publisher name (B). These names might help you identify the asset directory in a later step.
Open the Project window.
Expand the Assets
directory and locate the subdirectory for the package you identified in the Package Manager window in an earlier step.
Explore the directory structure that the publisher created (C), confirm it’s the correct package, and identify the assets you want to delete (D). Note: Unity doesn’t impose directory names or structures on publishers, so their assets might not be in an easily identifiable directory. The directory structure might be simple or complex.
Select the asset or assets you want to delete. Your selection can be a single asset, multiple assets, all assets in a subdirectory, or more.
Right-click the selected items, and select Delete.
Important: Scenes that depend on deleted assets aren’t reported as errors in the Console window. If you suspect the removal caused issues, import the package again. Refer to Importing an Asset Store package.