qcacld-3.0: Clean up struct del_bss_params

As a part of vdev convergence, legacy vdev code for vdev delete/stop/
down is removed. WMA timer for vdev manager operations are deleted,
now target_if takes care of it.

Structure del_bss_params is no more used to store bss delete request
params, hence struct del_bss_params is cleaned up from legacy code.

Change-Id: I487d2683908b705176ff8064dd3ce7cd49a3ce47
CRs-Fixed: 2517880
20 files changed