net/mlx4_core: drop useless LIST_HEAD

Drop LIST_HEAD where the variable it declares has never
been used.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
@@
- LIST_HEAD(x);
  ... when != x
// </smpl>

Fixes: c82e9aa0 ("mlx4_core: resource tracking for HCA resources used by guests")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/resource_tracker.c

@@ -4729,7 +4729,6 @@ static void rem_slave_srqs(struct mlx4_dev *dev, int slave)
 	struct res_srq *tmp;
 	int state;
 	u64 in_param;
-	LIST_HEAD(tlist);
 	int srqn;
 	int err;
 
@@ -4795,7 +4794,6 @@ static void rem_slave_cqs(struct mlx4_dev *dev, int slave)
 	struct res_cq *tmp;
 	int state;
 	u64 in_param;
-	LIST_HEAD(tlist);
 	int cqn;
 	int err;
 
@@ -4858,7 +4856,6 @@ static void rem_slave_mrs(struct mlx4_dev *dev, int slave)
 	struct res_mpt *tmp;
 	int state;
 	u64 in_param;
-	LIST_HEAD(tlist);
 	int mptn;
 	int err;
 
@@ -4926,7 +4923,6 @@ static void rem_slave_mtts(struct mlx4_dev *dev, int slave)
 	struct res_mtt *mtt;
 	struct res_mtt *tmp;
 	int state;
-	LIST_HEAD(tlist);
 	int base;
 	int err;
 
@@ -5115,7 +5111,6 @@ static void rem_slave_eqs(struct mlx4_dev *dev, int slave)
 	struct res_eq *tmp;
 	int err;
 	int state;
-	LIST_HEAD(tlist);
 	int eqn;
 
 	err = move_all_busy(dev, slave, RES_EQ);