Remove superfluous use of usb_callout_init() (== timeout_set()).
Remove superfluous use of usb_callout_init() (== timeout_set()).

Superfluous because the immediately following usb_callout() does the
same timeout_set(). And superfluous because the same usb_callout_init
was done during attach.

ok dlg@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars