net/mlx5e: TC, Remove redundant parse_attr argument

The parse_attr argument is not being used in
actions_match_supported_fdb(). remove it.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>