qcacmn: Cleanup unused DP APIs [PEER_ID_PHASE2]

Local peer_id is being cleaned up across DP, HDD and PS/WMA.
So, any references to local peer_id/sta_id will be replaced
by peer mac address and all interactions between the layers
will be based on peer mac address.

Cleanup unusued DP APIs which are based on local peer_id.

Change-Id: Idd95bc640ca7e36a427be7202935034d4ed58979
CRs-Fixed: 2529026
5 files changed