Remove the legacy ini config values defined in hdd_cfg.
Call the mlme cfg get api to retrieve chainmask config values.
Remove the tx_chainmask_cck from cds_config as mlme object is
not initialized during cds_open. Call mlme cfg api during
wma_open to populate the tx_chainmask_cck value.
Change-Id: If48aeb62cf35e2e604be2b72845b8e98c5c313dc
CRs-Fixed: 2310382