wifi_sta_iface: Deprecate setScanningMacOui

Bug: 154267383
Test: Device boots up and connects to wifi networks.
Change-Id: I70206e2c25d90ebd5ac35938af9ca2ebffefa318
diff --git a/wifi/1.4/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
index e2ea6e4..49f383a 100644
--- a/wifi/1.4/default/wifi_sta_iface.cpp
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -578,10 +578,9 @@
 }
 
 WifiStatus WifiStaIface::setScanningMacOuiInternal(
-    const std::array<uint8_t, 3>& oui) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setScanningMacOui(ifname_, oui);
-    return createWifiStatusFromLegacyError(legacy_status);
+    const std::array<uint8_t, 3>& /* oui */) {
+    // deprecated.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
 }
 
 WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {