net/mlx5: E-Switch, Remove unused declarations

These are never implenmented since commit b691b111 ("net/mlx5: Implement
devlink port function cmds to control ipsec_packet").
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240816101550.881844-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -887,9 +887,6 @@ int mlx5_esw_ipsec_vf_packet_offload_set(struct mlx5_eswitch *esw, struct mlx5_v
 					 bool enable);
 int mlx5_esw_ipsec_vf_packet_offload_supported(struct mlx5_core_dev *dev,
 					       u16 vport_num);
-void mlx5_esw_vport_ipsec_offload_enable(struct mlx5_eswitch *esw);
-void mlx5_esw_vport_ipsec_offload_disable(struct mlx5_eswitch *esw);
-
 #else  /* CONFIG_MLX5_ESWITCH */
 /* eswitch API stubs */
 static inline int  mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }