qcacld-3.0: Converge on struct delts_req_info

The driver currently defines two different data structures to hold
Delete Tspec Request parameters:
- tSirDeltsReqInfo
- struct delts_req_info

In this case having two different structures to provide the same
functionality is pointless. Furthermore, due to the way in which these
structures are used, there is an implicit requirement that they be
exactly identical. This approach is very fragile. To align with the
converged software architecture and to improve code maintainability
remove the legacy typedef and exclusively use the unified WMI
structure.

Change-Id: I0951c8da636bcbf81a335c0ea1250d721ca5c573
CRs-Fixed: 2371913
9 files changed