r8169: remove leftover locks after reverted change

After e31a9fed ("Revert "r8169: disable ASPM during NAPI poll"")
these locks aren't needed any longer.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/680f2606-ac7d-4ced-8694-e5033855da9b@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>