[unittests] Delete the temp file after it's not useful any more
[unittests] Delete the temp file after it's not useful any more

Navisjon/uwh-display,jroelofs/uwh-display,Navisjon/uwh-display,Navisjon/uwh-display,jroelofs/uwh-display,jroelofs/uwh-display,Navisjon/uwh-display