qcacld-3.0: Don't validate sessionId while processing del virtual iface
Del virtual interface is not processed while un-initializing SAP
as validate session-id fails, because sessionId is invalidated
in case of SAP during the stop ap leading to improper cleanup
during the sap close.
Also, del virtual iface can come even when the interface is down.
Hence, don't validate the sessiodId while processing del virtual
iface.
Change-Id: Ic1d365e09e0d280fa5d4a1543a594a08a652a717
CRs-Fixed: 1086647