To delete an Object you don't want:
  1. Tap+hold your object in the Import menu on canvas. A popup menu will appear.
  2. Tap the Delete button (the trash can).
  3. A confirmation will ask if you’re certain about getting rid of it. Confirm the message.
To delete an Object Library you don't want:
  1. Under the My Objects tab (in the Imports menu), tap+hold the library you wish to delete.
  2. A popup menu will appear with options to Edit, Delete or Share the library.
  3. Tap the Delete button (the trash can).
  4. A confirmation will ask if you're certain about deleting it, as you won't be able to undo. Confirm the message.