net/mlx5e: Remove early assignment to netdev->features

The netdev->features is initialized to netdev->hw_features at a later
point in the flow. Remove any redundant earlier assignment.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>