cleanup for Mdlharq usage/meaning

openair1/PHY/CODING/3gpplte_turbo_decoder_avx2_16bit.c

openair1/PHY/CODING/defs.h

openair1/PHY/CODING/lte_rate_matching.c

openair1/PHY/INIT/lte_init.c

openair1/PHY/LTE_REFSIG/defs.h

openair1/PHY/LTE_REFSIG/lte_dl_cell_spec.c

openair1/PHY/LTE_REFSIG/lte_dl_mbsfn.c

openair1/PHY/LTE_REFSIG/lte_dl_uespec.c

openair1/PHY/LTE_TRANSPORT/dci.c

openair1/PHY/LTE_TRANSPORT/defs.h

openair1/PHY/LTE_TRANSPORT/dlsch_coding.c

openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c

openair1/PHY/LTE_TRANSPORT/drs_modulation.c

openair1/PHY/LTE_TRANSPORT/pbch.c

openair1/PHY/LTE_TRANSPORT/pcfich.c

openair1/PHY/LTE_TRANSPORT/phich.c

openair1/PHY/LTE_TRANSPORT/pilots.c

openair1/PHY/LTE_TRANSPORT/pilots_mbsfn.c

openair1/PHY/LTE_TRANSPORT/proto.h

openair1/PHY/LTE_TRANSPORT/pss.c