LU-9094 lnet: remove ni from lnet_finalize

LU-9094 lnet: remove ni from lnet_finalize

Remove ni from lnet_finalize and kiblnd_txlist_done
input arguments. Also small code cleanup.

Change-Id: I509bfb21629e3dc0b4c80ec083e3953b78fdf874
Signed-off-by: Sergey Cheremencev <sergey.cheremencev@seagate.com>
Seagate-bug-id: MRP-4056
Reviewed-on: https://review.whamcloud.com/25375
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>