qcacld-3.0: Cleanup chanmode from from struct wma_txrx_node

With des_chan->ch_phymode already having the chanmode value,
remove chanmode from from struct wma_txrx_node to use common
des_chan->ch_phymode

Change-Id: Ib34a032b541367305a9fdba998ed6a00073ac9aa
CRs-Fixed: 2550440
6 files changed