1. DomName('DataTransferItemList.remove')
  2. DocsEditable()
  3. Experimental()
void remove(int index)

Source 

@DomName('DataTransferItemList.remove')
@DocsEditable()
@Experimental() // untriaged
void remove(int index) => _blink.BlinkDataTransferItemList.instance.remove_Callback_1_(this, index);