net: marvell: prestera: Cleanup router struct

Field "aborted" was added in
69204174

 ("net: marvell: prestera: Add prestera router infra").
It will not be used. So remove.

Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Link: https://lore.kernel.org/r/20220111010826.3779-1-yevhen.orlov@plvision.eu


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