RDMA/mlx5: Remove duplicate definitions of SW_ICM macros

Those macros are already defined in include/linux/mlx5/driver.h, so delete
their duplicate variants.

Link: https://lore.kernel.org/r/20200310075706.238592-1-leon@kernel.org
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>