LU-9550 adio: delete the old Lustre ADIO driver patches

Since Lustre ADIO driver was released by MPICH2 about 8 years ago,
those old Lustre ADIO driver patches (lustre/contrib/*mpich*.patch)
can be deleted.

Test-Parameters: trivial
Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Change-Id: Ibbd4c67b36065d913c6e3b71895f2413481c923c
Reviewed-on: https://review.whamcloud.com/27264


Tested-by: Jenkins
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>