staging: r8188eu: remove redundant variable hoffset

Variable hoffset is being assigned values but it is never being
used. The variable is redundant and can be removed.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210907085302.10672-1-colin.king@canonical.com


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