'tempfile' and 'oeqa.utils.command.runCmd' are unused while 'os' is
actually used.
(From OE-Core rev: 50f766233e83528eebeca92877277374c7193530)
Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>