net/mlx5: Remove health syndrome enum duplication

Health syndrome enum values were duplicated in mlx5_ifc and health.c,
the correct place for them is mlx5_ifc.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>