How do I remove items in bulk in Asset Management?

Go to the Asset Management module

Click on the "Items" tab at the top

Use the filters to narrow down the item table to the items you'd like to remove

Use the checkboxes next to the items you'd like to remove and click the "Dispose Selected" button above the item table.

If you need to select more than 10 items, you can use the show entries drop-down to increase the number of items displayed in the table.