cleaning up of dci functions

nfapi/open-nFAPI/nfapi/public_inc/fapi_nr_ue_interface.h

openair1/PHY/NR_UE_TRANSPORT/dci_nr.c

openair1/SIMULATION/NR_PHY/dlsim.c

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h

openair2/LAYER2/NR_MAC_UE/config_ue.c

openair2/LAYER2/NR_MAC_UE/mac_defs.h

openair2/LAYER2/NR_MAC_UE/mac_proto.h

openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_bch.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h