supplicant(vts): Remove dependency on libwifi_hal

libwifi_hal is a vendor component, so these are not allowed to be used
in the VTS tests. Use the vendor HAL for the required initializations
instead since that is the flow used by framework anyway (setup the wifi
chip using vendor hal and then use wpa_supplicant for connections).

Bug: 63704014
Bug: 33241851
Test: make vts -j30 BUILD_GOOGLE_VTS=true TARGET_PRODUCT=aosp_arm64 &&
vts-tradefed run commandAndExit vts --skip-all-system-status-check
--primary-abi-only --skip-preconditions --module
VtsHalWifiSupplicantV1_0Target -l INFO

Change-Id: I396d8311253e2b2493f9bb901731937019d30164