`armci_msg_barr_init()` and `armci_msg_gop_init` unused. once it goes, we can remove the global variables `_armci_barrier_init` and `_armci_gop_init`.
armci_msg_barr_init()andarmci_msg_gop_initunused.once it goes, we can remove the global variables
_armci_barrier_initand_armci_gop_init.