Delete WPS settings.

Removes the WPS PIN and Push button settings, all of
the strings, and related code.

Change-Id: I1c7a35ffc8491c57e07accba9b1b5f5407b01831
Fixes: 72421239
Test: deletes code, robotests

src/com/android/settings/wifi/ConfigureWifiSettings.java

@@ -92,8 +92,6 @@ public class ConfigureWifiSettings extends DashboardFragment {
         controllers.add(new WifiInfoPreferenceController(context, getLifecycle(), wifiManager));
         controllers.add(new CellularFallbackPreferenceController(context));
         controllers.add(new WifiP2pPreferenceController(context, getLifecycle(), wifiManager));
-        controllers.add(new WpsPreferenceController(
-                context, getLifecycle(), wifiManager, getFragmentManager()));
         return controllers;
     }