utils/genrandconfig: stop passing --passive-ftp to wget
Since we no longer use WGET to retrieve FTP-hosted files, we can drop
the --passive-ftp option from genrandconfig, as it would cause
problems on systems that use wget2.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>