At present there is not a solution for this. It seems that this feature was removed from Lion. The reason for this we will never be sure.
For now you will need to manually delete using the mouse and trash can.
Deleting a file from inside Lion’s Preview.app
At present there is not a solution for this. It seems that this feature was removed from Lion. The reason for this we will never be sure.
For now you will need to manually delete using the mouse and trash can.