Related to bug report T61412.
Deleting in the File Browser is currently a highly dangerous and destructive action.
Rather than hard deleting, we should use the correct API's to move items to the system trash in the various OS's we support.
If this is not easily possible, we should disable deleting inside the File Browser for those platforms in the meantime. It's currently too easy to permanently lose large chunks of user hard drive contents with no remedy to get it back, which is not acceptable.