net/mlx5e: TC, Cleanup ct resources for nic flow

The cited commit removes special handling of CT action. But it
removes too much. Pre ct/ct_nat tables and some other resources
are not destroyed due to the cited commit.

Fix it by adding it back.

Fixes: 08fe94ec

 ("net/mlx5e: TC, Remove special handling of CT action")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>