net: broadcom: bcm4908enet: remove redundant variable bytes

net: broadcom: bcm4908enet: remove redundant variable bytes

[ Upstream commit 62a3106697f3c6f9af64a2cd0f9ff58552010dc8 ]

The variable bytes is being used to summate slot lengths,
however the value is never used afterwards. The summation
is redundant so remove variable bytes.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20211222003937.727325-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: ef3556ee16c6 ("net: broadcom: bcm4908_enet: update TX stats after actual transmission")
Signed-off-by: Sasha Levin <sashal@kernel.org>