net/mlx5e: TC, Remove redundant error logging

Remove redundant and trivial error logging when trying to
offload mirred device with unsupported devices.
Using OVS could hit those a lot and the errors are still
logged in extack.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>