staging: vt6655: dead code remove device_nics variable

The module can not load more than once.

Remove device_nics, MAX_UINTS and OPTION_DEFAULT

Remove dead index variable from device_get_options

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>