usb: typec: ucsi: remove redundant assignment to variable num

Variable num is being assigned with a value that is never read, it is
assigned a new value later in a for-loop. The assignment is redundant
and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200208165022.30429-1-colin.king@canonical.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>