net/mlx5e: Remove unused tstamp SQ field

Remove tstamp pointer in mlx5e_txqsq as it's no longer used after
commit 7c39afb3 ("net/mlx5: PTP code migration to driver core section").
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Aya Levin <ayal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -432,7 +432,6 @@ struct mlx5e_txqsq {
 	__be32                     mkey_be;
 	unsigned long              state;
 	unsigned int               hw_mtu;
-	struct hwtstamp_config    *tstamp;
 	struct mlx5_clock         *clock;
 	struct net_device         *netdev;
 	struct mlx5_core_dev      *mdev;

drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c

@@ -195,7 +195,6 @@ static int mlx5e_ptp_alloc_txqsq(struct mlx5e_ptp *c, int txq_ix,
 	int node;
 
 	sq->pdev      = c->pdev;
-	sq->tstamp    = c->tstamp;
 	sq->clock     = &mdev->clock;
 	sq->mkey_be   = c->mkey_be;
 	sq->netdev    = c->netdev;

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -1313,7 +1313,6 @@ static int mlx5e_alloc_txqsq(struct mlx5e_channel *c,
 	int err;
 
 	sq->pdev      = c->pdev;
-	sq->tstamp    = c->tstamp;
 	sq->clock     = &mdev->clock;
 	sq->mkey_be   = c->mkey_be;
 	sq->netdev    = c->netdev;